Population growth

In biology, population growth is the increase in the number of individuals in a population. The population growth rate is the rate at which the number of individuals in a population increases in a given time period as a fraction of the initial population.

Global human population growth amounts to around 75 million annually, or 1.1% per year. The global population has grown from 1 billion in 1800 to 7 billion in 2012. It is expected to keep growing, where estimates have put the total population at 8.4 billion by mid-2030, and 9.6 billion by mid-2050.[1]

Population[2]
Years Passed Year Billion
- 1800 1
127 1927 2
33 1960 3
14 1974 4
13 1987 5
12 1999 6
12 2011 7
14 2025* 8
18 2043* 9
40 2083* 10
* UNFPA
United Nations Population Fund
estimate 31.10.2011

Population growth rate

The "population growth rate" is the rate at which the number of individuals in a population increases in a given time period, expressed as a fraction of the initial population. Specifically, population growth rate refers to the change in population over a unit time period, often expressed as a percentage of the number of individuals in the population at the beginning of that period. This can be written as the formula, valid for a sufficiently small time interval:

Population\ growth\ rate = \frac{ P(t_2) - P(t_1)} {P(t_1)(t_2-t_1)}

A positive growth rate indicates that the population is increasing, while a negative growth rate indicates that the population is decreasing. A growth ratio of zero indicates that there were the same number of individuals at the beginning and end of the period—a growth rate may be zero even when there are significant changes in the birth rates, death rates, immigration rates, and age distribution between the two times.[3]

A related measure is the net reproduction rate. In the absence of migration, a net reproduction rate of more than 1 indicates that the population of females is increasing, while a net reproduction rate less than one (sub-replacement fertility) indicates that the population of females is decreasing.

Human population growth rate

Main article: Total fertility rate
A world map showing global variations in fertility rate per woman, according to the CIA World Factbook's 2015 data.

  7–8 children
  6–7 children
  5–6 children
  4–5 children
  3–4 children
  2–3 children
  1–2 children
  0–1 children

Estimates of population evolution in different continents between 1950 and 2050, according to the United Nations. The vertical axis is logarithmic and is in millions of people.
Growth rate of world population (1950–2050).

Globally, the growth rate of the human population has been declining since peaking in 1962 and 1963 at 2.2% per annum. In 2009, the estimated annual growth rate was 1.1%.[4] The CIA World Factbook gives the world annual birthrate, mortality rate, and growth rate as 1.86%, 0.78%, and 1.08% respectively.[5] The last 100 years have seen a rapid increase in population due to medical advances and massive increase in agricultural productivity[6] made possible by the Green Revolution.[7][8][9]

The actual annual growth in the number of humans fell from its peak of 88.0 million in 1989, to a low of 73.9 million in 2003, after which it rose again to 75.2 million in 2006. Since then, annual growth has declined. In 2009, the human population increased by 74.6 million.[4] Each region of the globe has seen great reductions in growth rate in recent decades, though growth rates remain above 2% in some countries of the Middle East and Sub-Saharan Africa, and also in South Asia, Southeast Asia, and Latin America.[10]

Some countries experience negative population growth, especially in Eastern Europe mainly due to low fertility rates, high death rates and emigration. In Southern Africa, growth is slowing due to the high number of AIDS-related deaths. Some Western Europe countries might also encounter negative population growth.[11] Japan's population began decreasing in 2005.[12]

The United Nations Population Division expects world population to peak at over 10 billion at the end of the 21st century but Sanjeev Sanyal has argued that global fertility will fall below replacement rates in the 2020s and that world population will peak below 9 billion by 2050 followed by a long decline.[13]

Growth by country

According to United Nations population statistics, the world population grew by 30%, or 1.6 billion people, between 1990 and 2010.[14] In number of people the increase was highest in India (350 million) and China (196 million). Population growth was among highest in the United Arab Emirates (315%) and Qatar (271%).[14]

Growth rates of the world's most populous countries
Rank Country Population
2010		 Population
1990		 Growth (%)
1990–2010
  World 6,895,889,000 5,306,425,000 30.0%
1  China 1,341,335,000 1,145,195,000 17.1%
2  India 1,224,614,000 873,785,000 40.2%
3  United States 310,384,000 253,339,000 22.5%
4  Indonesia 239,871,000 184,346,000 30.1%
5  Brazil 194,946,000 149,650,000 30.3%
6  Pakistan 173,593,000 111,845,000 55.3%
7  Nigeria 158,423,000 97,552,000 62.4%
8  Bangladesh 148,692,000 105,256,000 41.3%
9  Russia 142,958,000 148,244,000 -3.6%
10  Japan 128,057,000 122,251,000 4.7%
Example nation 1967 population 1990 population 1994 population 2002 population 2008 population Life expectancy in years (2008) Total population growth from 1960s to 2007- 2011
Eritrea* N/A* N/A* 3,437,000[15] 4,298,269 5,673,520[16] 61[17][17]2,236,520
Ethiopia* 23,457,000*[18]50,974,000* [19] 54,939,000[15] 67,673,031(2003) 79,221,000[20] 55[17] 55,764,000
Sudan**14,355,000**[18] 25,204,000** [19] 27,361,000**[15] 38,114,160 (2003)** 42,272,000**[21] 50**[17] 27,917,000
Chad 3,410,000[18] 5,679,000[19] 6,183,000[15] 9,253,493(2003) 10,329,208 (2009)[22] 47[17] 6,919,205
Niger3,546,000[18]7,732,000[19] 8,846,000[15] 10,790,352 (2001) 15,306,252 (2009)[23] 44[17] 11,760,252
Nigeria61,450,000[18]88,500,000[19] 108,467,000[15] 129,934,911158,259,000[24] 47[17] 96,809,000
Mali4,745,000[18]8,156,000,[19] 10,462,000[15]11,340,48014,517,176(2010).[25] 50[17] 9,772,176
Mauritania 1,050,000[18] 2,025,000 [19] 2,211,000[15] 2,667,859 (2003) 3,291,000 (2009)[22] 54[17] 2,241,000
Senegal3,607,000[18]7,327,000[19] 8,102,000[15] 9,967,21513,711,597 (2009)[26] 57[17] 10,104,597
Gambia343,000[18]861,000[19] 1,081,000[15] 1,367,124 (2000)1,705,000[24] 55[17] 1,362,000
Algeria 11,833,126 (1966)[18] 25,012,000[19] 27,325,000 [15] 32,818,500 (2003) 34,895,000[20][27] 74[17] 23,061,874
The DRC/Zaire 16,353,000[18] 35,562,000[19] 42,552,000[15] 55,225,478 (2003) 70,916,439 [20][28] 54[17] 54,563,439
Egypt 30,083,419 (1966)[18] 53,153,000[19] 58,326,000[15] 70,712,345 (2003) 79,089,650 [20][29][29] 72[17] 49,006,231
Réunion (French colony/overseas department)418,000[18] N/A[19] N/A[15] 720,934 (2003) 827,000 (2009) [27] N/A[17] 409,000
The Falkland Islands (UK Territory)2,500[18] N/A[19] N/A[15] 2,967 (2003) 3,140(2010)[22] N/A[17] 640
Chile8,935,500[18]13,173,000[19] 13,994,000[15] 15,116,435 17,224,200 (2011) 77[17] 8,288,700
Colombia19,191,000[18] 32,987,000[19] 34,520,000[15] 41,088,227 45,925,397(2010)[30] 73[17] 26,734,397
Brazil85,655,000[18]150,368,000[19] 153,725,000[15] 174,468,575 (2000) 190,732,694(2010) [31] 72[17] 105,077,694
Mexico45,671,000[18] 86,154,000[19] 93,008,000[15] 103,400,165 (2000)112,322,757(2010)[32] 76[17] 66,651,757
Fiji 476,727 (1966)[18] 765,000[19] 771,000[15] 844,330 (2001) 849,000[27] (2010) 70[17] 372,273
Nauru6,050(1966)[18]10,000[19] N/A[15] 12,329 9,322 (2011)[33] N/A[17] 3,272
Jamaica 1,876,000[18] 2,420,000[19] 2,429,000[15] 2,695,867 (2003) 2,847,232[34](2010) 74[17] 971,232
Australia 11,540,764 (1964)[18] 17,086,000[19] 17,843,000[15] 19,546,792 (2003)24,160,691[35] (2010) 82[17] 10,066,508
Albania 1,965,500(1964)[18] 3,250,000[19] 3,414,000[15] 3,510,484 2,986,952 (July 2010 est.)[22][36] (2010) 78[17]1,021,452
Poland31,944,000[18]38,180,000[19] 38,554,000[15] 38,626,349 (2001)38,192,000(2010)[37] 75[17] 6,248,000
Hungary10,212,000[18]10,553,000[19] 10,261,000[15] 10,106,017 9,979,000(2010)[38] 73[17] -142,000
Bulgaria8,226,564(1965)[18]8,980,000[19] 8,443,000[15] 7,707,495(2000)7,351,234 (2011)[39] 73[17] -875,330
United Kingdom/UK/Great Britain 55,068,000 (1966)[18] 57,411,000[19] 58,091,000[15] 58,789,194 62,008,048 (2010)[40] 79[17] 7,020,048
Republic of Ireland/Irish Republic/Eire/Ireland2,884,002(1966)[18] 3,503,000[19] 3,571,000[15] 3,840,838 (2000) 4,470,700 [41] (2010) 78[17] 1,586,698
The PRC/China720,000,000[18] 1,139,060,000[19] 1,208,841,000[15] 1,286,975,468 (2004) 1,339,724,852(2010)[42] 73[17] 619,724,852
Japan*** 98,274,961(1965)[18]123,537,000[19] 124,961,000[15] 127,333,002127,420,000 (2010)[43] 82[17] 28,123,865
Ryukyu Islands (Once occupied by the U.S.)*** 934,176(1965)[18]N/AN/AN/AN/AN/AN/A
India#511,115,000[18]843,931,000[19] 918,570,000[15] 1,028,610,328 (2001) 1,210,193,422(2011)[44] 69[17] 699,078,422
Singapore1,956,000(1967)[18]3,003,000 (1990) [19] 2,930,000 (1994)[15] 4,452,732 (2002)5,076,700(2010)[27] 82 (2008)[17]3,120,700
Sikkim#183,000(1967)[18]N/AN/AN/AN/AN/AN/A
Monaco/Monagasie Principality/Principality of Monaco24,000(1967)[18]29,000 (1990) [19] N/A (1994)[15] 31,842 (2000)35,586[45] (2010) (2008)[17]1,586
Greece/Hellas/The Hellenic Republic of Greece8,716,000(1967)[18]10,123,000 (1990) [19] 10,426,000 (1994)[15] 10,964,020(2001)[46] 11,305,118(2011)[47] N/A (2008)[17] 2,589,118
Faroe Islands/The Faroes/ Fearos Islands (Danish dependency.)38,000 (1967)[18]N/A(1990) [19] N/A(1994)[15] 46,345 (2000)48,917(2010) [48] N/A (2008)[17]18,917
Liechtenstein20,000(1967)[18]29,000 (1990) [19] N/A (1994)[15] 33,307(2000) 35,789(2009)[49] (2008)[17]15,789
South Korea/ROK29,207,856(1966)[18]42,793,000 (1990) [19] 44,453,000 (1994)[15] 48,324,000 (2003)48,875,000(2010) [50] (2008)[17]19,667,144
North Korea/PDRK12,700,000(1967)[18]21,773,000 (1990) [19] 23,483,000 (1994)[15] 22,224,195 (2002) 24,051,218(2010)[51] (2008)[17]11,351,218
Brunei107,200(1967)[18] 266,000(1990) [19] 280,000 (1994)[15] 332,844 (2001)401,890(2011)[22] 76(2008)[17]306,609
Malaysia/Federation_of_Malaysia/Malaya10,671,000(1967)[18]17,861,000 (1990) [19] 19,489,000 (1994)[15] 21,793,293(2002)27,565,821(2010)[52] (2008)[17]16,894,821
Thailand32,680,000(1967)[18]57,196,000 (1990) [19] 59,396,000 (1994)[15] 60,606,947(2000)[53]63,878,267(2011)[54] (2008)[17] 31,198,267
Lebanon2,520,000(1967)[18]2,701,000 (1990) [19] 2,915,000 (1994)[15] 3,727,703 [55] (2003)4,224,000[56](2009) - (2008)[17]
Syria5,600,000(1967)[18]12,116,000 (1990) [19] 13,844,000 (1994)[15] 17,585,540 (2003)22,457,763(2011)[57] -(2008)[17]
Bahrain182,00(1967)[18]503,000 (1990) [19] 549,000 (1994)[15] 667,238 (2003)1,234,596 [58] (2010) 75(2008)[17]
Sri Lanka/Ceylon 11,741,000(1967)[18]16,993,000 (1990) [19] 17,685,000 (1994)[15] 19,607,519 (2002)20,238,000[27] (2009) - (2008)[17]
Switzerland/Swiss Confederacy/Swiss Confederation6,050,000(1967)[18]6.712,000 (1990) [19] 6,994,000 (1994)[15] 7,261,200 (2002)7,866,500[59] (2010) - (2008)[17]
Luxembourg335,000(1967)[18]381,000 (1990) [19] 401,000 (1994)[15] 439,539 (2001) 511,840(2011)[60] -(2008)[17]
Romania/Rumania19,105,056(1966)[18]23,200,000 (1990) [19] 22,736,000 (1994)[15] 21,680,974 (2002)21,466,174[61] (2011) - (2008)[17]
Niuē (New Zealand colony)1,900(1966)[18]N/A (1990) [19] N/A (1994)[15] 2,134 (2002)1,398(2009)[62] N/A (2008)[17] -502
Tokelau/Union Islans/Tokelau Islands (New Zealand colony)5,194(1966)[18]N/A (1990) [19] N/A (1994)[15] 1,445(2001)1,416(2009) N/A (2008)[17] -3,778
Jamaican1,876,000 (1967)[18] 2,420,000 (1990) [19] 2,429,000 (1994)[15] 2,695,867 (2003) 2,847,232[34](2010) 74 (2008)[17]971,232
Argentina/The Argentine Republic32,031,000(1967)[18] 32,322,000(1990) [19] 34,180,000 (1994)[15] 37,812,817 (2002)40,091,359 (2010) 74 (2008)[17]8,060,359
France49,890,660(1967)[18] 56,440,000(1990) [19] 57,747,000 (1994)[15] 59,551,000 (2001)63,136,180(2011)[63] 81 (2008)[17]
Italy52,334,000(1967)[18]57,662,000 (1990) [19] 57,193,000 (1994)[15] 56,995,744 (2002)60,605,053[64] (2011) 80 (2008)[17]
Mauritius774,000(1967)[18] 1,075,000(1990) [19] 1,104,000(1994)[15] 1,179,137 (2000) 1,288,000 (2009)[27] 75 (2008)[17]514,000
Guatemala4,717,000(1967)[18]9,197,000 (1990) [19] 10,322,000 (1994)[15] 12,974,361 (2000)13,276,517 (2009) 70 (2008)[17]8,559,517
Cuba8,033,000(1967)[18]10,609,000 (1990) [19] 10,960,000 (1994)[15] 11,177,743 (2002) 11,239,363(2009)[65] 77 (2008)[17]
Barbados246,000(1967)[18]255,000 (1990) [19] 261,000 (1994)[15] 250,012 (2001) 284,589(2010)[22] 73 (2008)[17]18,589
Western Samoa131,377(1967)[18]164,000 (1990) [19] 164,000 (1994)[15] 178,173 (2003) 179,000(2009)[27] N/A (2008)[17]
Sweden7,765,981(1967)[18]8,559,000 (1990) [19] 8,794,000 (1994)[15] 8,920,705 (2002) 9,354,462 (2009) 81 (2008)[17]
Finland/Suomi/Suomen tasavalta4,664,000(1967)[18]4,986,000 (1990) [19] 5,095,000 (1994)[15] 5,175,783 (2002)5,374,781 (2010) N/A (2008)[17]
Portugal9,440,000(1967)[18]10,525,000 (1990) [19] 9,830,000 (1994)[15] 10,355,824 (2001)10,647,763[66](2011) N/A (2008)[17]
Austria7,323,981(1967)[18]7,712,000 (1990) [19] 8,031,000 (1994)[15] 8,032,926 (2001)8,404,252 (2011) N/A (2008)[17]
Libya1,738,000(1967)[18]4,545,000 (1990) [19] 5,225,000(1994)[15] 5,499,074 (2002)6,420,000 (2009)[27] 77 (2008)[17]
Peru12,385,000(1967)[18]21,550,000 (1990) [19] 23,080,000(1994)[15] 27,949,639 (2002)29,496,000(2010) 70 (2008)[17]
Guinea Bissau528,000(1967)[18]965,000 (1990) [19] 1,050,000 (1994)[15] 1,345,479 (2002) 1,647,000[27](2009) 48 (2008)[17]
Angola5,203,066(1967)[18]10,020,000 (1990) [19] 10,674,000 (1994)[15] 10,766,500(2003) 18,498,000[27][67](2009) (38 2008)[17]
Equatorial Guinea/E.G.277,000(1967)[18]348,000 (1990) [19] 389,000 (1994)[15] 474,214 (2000)676,000(2009)[27]61 (2008)[17]
Benin/Dahomey2,505,000(1967)[18]4,736,000 (1990) [19] 5,246,000(1994)[15] 8,500,500 (2002)8,791,832 (2009)59 (2008)[17]
Laos2,770,000(1967)[18]4,139,000 (1990) [19] 4,742,000 (1994)[15] 5,635,967 (2002)6,800,000[68] (2011) 56(2008)[17]
Nepal/Sri Nepala Sarkar/Kingdom of Nepal/Nepalese Kingdom 10,500,000(1967)[18]18,961,000 (1990) [19] 21,360,000 (1994)[15] 25,284,463 (2002)29,331,000[27] (2009) (2008)[17]
Iran/Persia/Islamic Republic of Iran/Islamic Republic/Iranian Islamic Republic25,781,090 (1966)[18]54,608,000(1990) [19] 59,778,000(1994)[15] 66,622,704 (2002)75,330,000 (2010) [44] 71 (2008)[17]
Canada20,014,880(1966)[18] 26,603,000(1990) [19] 29,248,000(1994)[15] 31,081,900 (2001)32,623,490(2011)[69]81 (2008)[17]
USA/United States/United States of America/US/America199,118,000(1967)[18] 249,995,000(1990) [19] 260,650,00(1994)[15] 281,421,906 (2000)308,745,538(2010)[70] 78(2008)[17]
Uganda7,931,000(1967)[18]18,795,000 (1990) [19] 20,621,000(1994)[15] 24,227,297 (2002)32,369,558 (2009)52 (2008)[17]
Notes
* Eritrea left Ethiopia in 1991.
** Split into the nations of Sudan and Southern Sudan during 2011.
*** Japan and the Ryukyu Islands merged in 1972.
# India and Sikkim merged in 1975.
Population growth 1990–2012 (%)[71]
Africa 73.3%
Middle East 68.2%
Asia (excl. China) 42.8%
China 19.0%
OECD Americas 27.9%
Non-OECD Americas 36.6%
OECD Europe 11.5%
OECD Asia Oceania 11.1%
Non-OECD Europe and Eurasia -0.8%
Thousands of scooters make their way through the city of Hồ Chí Minh, Vietnam.

Into the future

Estimated size of human population from 10,000 BCE to 2000 CE.
The majority of world population growth today is occurring in less developed countries.

According to UN's 2010 revision to its population projections, world population will peak at 10.1bn in 2100 compared to 7bn in 2011.[72] A 2014 paper by demographers from several universities and the United Nations Population Division forecast that the world's population will reach about 10.9 billion in 2100 and continue growing thereafter.[73] However, some experts dispute the UN's forecast and have argued that birthrates will fall below replacement rate in the 2020s. According to these forecasters, population growth will be only sustained till the 2040s by rising longevity but will peak below 9bn by 2050.[13]

See also

References

  1. ↑ Population Reference Bureau. "2013 World Population Factsheet" (PDF). www.pbr.org. Population Reference Bureau. Retrieved 5 December 2014.
  2. ↑ 7. miljardis ihminen, Helsingin Sanomat editor Mr Timo Paukku 5.9.2011 D1 (Finnish)
  3. ↑ Association of Public Health Epidemiologists in Ontario
  4. 1 2 "International Programs". Archived from the original on July 1, 2009.
  5. ↑ "The World Factbook". 20 November 2015. Retrieved 4 January 2016.
  6. ↑ "BBC NEWS - South Asia - The end of India's green revolution?".
  7. ↑ Food First/Institute for Food and Development Policy
  8. ↑ The Christian Science Monitor (24 July 2007). "Rising food prices curb aid to global poor". The Christian Science Monitor.
  9. ↑ "Finfacts: Irish business, finance news on economics".
  10. ↑ "International Programs".
  11. ↑ UN population projections
  12. ↑ "Japan sees biggest population fall". the Guardian.
  13. 1 2 Sanjeev Sanyal. "Sanjeev Sanyal on The End of Population Growth - Project Syndicate". Project Syndicate.
  14. 1 2 "World Population Prospects - Population Division - United Nations".
  15. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 The British Collins Longman Student Atlas, the 1996 and in 1998 publications, ISBN 978-0-00-448879-0 for the 1998 edition, ISBN 0-00-448365-0 for the 1996 edition
  16. ↑ url=http://www.un.org/esa/population/publications/wpp2008/wpp2008_text_tables.pdf
  17. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 'Modern School Atlas (96th edition)', ISBN 978-1-84907-013-3.
  18. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 The British Oxford economic atlas of the World 4th edition, ISBN 0-19-894107-2
  19. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 The British Collins Atlas of the World, the 1993 edition, ISBN 0-00-448038-4
  20. 1 2 3 4 Ethiopia Central Statistics Office -- Population Projection for mid-2008
  21. ↑ Department of Economic and Social Affairs. "World Population Prospects, Table A.1" (PDF). 2008 revision. United Nations.
  22. 1 2 3 4 5 6 "Falkland Islands (Islas Malvinas)". The World Factbook. CIA. Retrieved 5 March 2010.
  23. ↑ Central Intelligence Agency (2009). "Niger". The World Factbook. Retrieved January 10, 2010.
  24. 1 2 Department of Economic and Social Affairs Population Division (2009). "World Population Prospects, Table A.1" (PDF). 2008 revision. United Nations. Retrieved 2009-03-12.
  25. ↑ "Mali preliminary 2009 census". Institut National de la Statistique. Retrieved January 12, 2010.
  26. ↑ Central Intelligence Agency (2009). "Senegal". The World Factbook. Retrieved January 10, 2010.
  27. 1 2 3 4 5 6 7 8 9 10 11 12 Department of Economic and Social Affairs Population Division (2010). "World Population Prospects, Table A.1" (PDF). 2008 revision. United Nations. Retrieved 2009-03-12.
  28. ↑ The World Factbook- Congo, Democratic Republic of the. Central Intelligence Agency.
  29. 1 2 "Central Agency for Population Mobilisation and Statistics — Population Clock (July 2008)". Msrintranet.capmas.gov.eg. Retrieved 2010-08-25.
  30. ↑ "Departamento Administrativo Nacional de Estadística". Dane.gov.co. Retrieved 2010-08-22.
  31. ↑ IBGE. Censo 2010: população do Brasil é de 190.732.694 pessoas.
  32. ↑ "INEGI 2010 Census Statistics". inegi.org.mx. Retrieved 2010-11-25.
  33. ↑ Central Intelligence Agency (2011). "Nauru". The World Factbook. Retrieved 12 February 2011.
  34. 1 2 "The World Factbook".
  35. ↑ "Population clock". Australian Bureau of Statistics website. Commonwealth of Australia. Retrieved 12 April 2011. The population estimate shown is automatically calculated daily at 00:00 UTC and is based on data obtained from the population clock on the date shown in the citation.
  36. ↑ "IFs Forecast - Version 7.00-Google Public Data Explorer".
  37. ↑ "Wzrasta liczba ludności Polski - Wiadomości - WP.PL". Wiadomosci.wp.pl. 2010-07-23. Retrieved 2010-07-27.
  38. ↑ Hungarian Central Statistical Office. Retrieved 25 July 2010.
  39. ↑ http://www.nsi.bg/EPDOCS/Census2011pr.pdf
  40. ↑ "Total population at 1 January". Eurostat. 11 March 2011. Retrieved 29 April 2011.
  41. ↑ "CSO – Population and Migration Estimates April 2010" (PDF). September 2010. Retrieved 21 September 2010.
  42. ↑ Communiqué of the National Bureau of Statistics of People's Republic of China on Major Figures of the 2010 Population Census
  43. ↑ "Statistics Bureau Home Page/Population Estimates Monthly Report".
  44. 1 2 "Provisional Population Totals - Census 2011". Indian Census Bureau 2011. Retrieved 2011-03-29.
  45. ↑ Monaco, The World Factbook, Central Intelligence Agency. Retrieved 7 June 2010.
  46. ↑ "Πίνακας 1. Πληθυσμός κατά φύλο και ηλικία" (PDF). National Statistical Service of Greece: Population census of 18 March 2001. Archived from the original (PDF) on March 25, 2009.
  47. ↑ "Total population". Eurostat. 1 January 2010. Retrieved 8 January 2010.
  48. ↑ (Faroese)
  49. ↑ Bevölkerungsstatistik 30. Juni 2009, Landesverwaltung Liechtenstein.
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  59. ↑ "Population size and population composition". Swiss Federal Statistical Office. Swiss Federal Statistical Office, Neuchâtel. 2010. Retrieved 2011-04-29.
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  61. ↑ "Romania - Population". epp.eurostat.ec.europa.eu. Retrieved 26 May 2011.
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  65. ↑ Anuario Estadístico de Cuba 2009. Edición 2010, Oficina Nacional de Estadísticas, República de Cuba. Accessed on November 6, 2010. Note: An exchange rate of 1 CUC to 1.08 USD was used to convert GDP.
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  67. ↑ "Population Forecast to 2060 by International Futures hosted by Google Public Data Explorer". Google.com. Retrieved 2011-07-13.
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