Editing 1900s (section)

== Demographics ==
{{Main|Estimates of historical world population}}
Estimates for the world population by 1900 vary from 1.563 to 1.710 billion.
{| class="wikitable" style="text-align:right;font-size:small;"
![[Population Reference Bureau|PRB]]
(1973–2016)<ref name="Population Reference Bureau">Data from [http://www.prb.org/Home.aspx Population Reference Bureau] {{Webarchive|url=https://web.archive.org/web/20080520091122/http://www.prb.org/Home.aspx |date=2008-05-20 }}.

2016 estimate: (a) [http://www.prb.org/pdf16/prb-wpds2016-web-2016.pdf "2016 World Population Data Sheet"] {{Webarchive|url=https://web.archive.org/web/20170828162128/http://www.prb.org/pdf16/prb-wpds2016-web-2016.pdf |date=August 28, 2017 }}

2015 estimate: (b) Toshiko Kaneda, 2015, [http://www.prb.org/pdf15/2015-world-population-data-sheet_eng.pdf "2015 World Population Data Sheet"] {{Webarchive|url=https://web.archive.org/web/20180219062132/http://www.prb.org/pdf15/2015-world-population-data-sheet_eng.pdf |date=February 19, 2018 }}.

2014 estimate: (c) Carl Haub, 2014, [http://www.prb.org/pdf14/2014-world-population-data-sheet_eng.pdf "2014 World Population Data Sheet"] {{Webarchive|url=https://web.archive.org/web/20180218233032/http://www.prb.org/pdf14/2014-world-population-data-sheet_eng.pdf |date=February 18, 2018 }}.

2013 estimate: (d) Carl Haub, 2013, [http://www.prb.org/pdf13/2013-population-data-sheet_eng.pdf "2013 World Population Data Sheet"] {{Webarchive|url=https://web.archive.org/web/20150226072048/http://www.prb.org/pdf13/2013-population-data-sheet_eng.pdf |date=February 26, 2015 }}.

2012 estimate: (e) Carl Haub, 2012, [http://www.prb.org/pdf12/2012-population-data-sheet_eng.pdf "2012 World Population Data Sheet"] {{Webarchive|url=https://web.archive.org/web/20140521191647/http://www.prb.org/pdf12/2012-population-data-sheet_eng.pdf |date=May 21, 2014 }}.

2011 estimate: (f) Carl Haub, 2011, [http://www.prb.org/pdf11/2011population-data-sheet_eng.pdf "2011 World Population Data Sheet"] {{Webarchive|url=https://web.archive.org/web/20171118162350/http://www.prb.org/pdf11/2011population-data-sheet_eng.pdf |date=November 18, 2017 }}.

2010 estimate: (g) Carl Haub, 2010, [http://www.prb.org/pdf10/10wpds_eng.pdf "2010 World Population Data Sheet"] {{Webarchive|url=https://web.archive.org/web/20180109060416/http://www.prb.org/pdf10/10wpds_eng.pdf |date=January 9, 2018 }}.

2009 estimate: (h) Carl Haub, 2009, [http://www.prb.org/pdf09/09wpds_eng.pdf "2009 World Population Data Sheet"] {{Webarchive|url=https://web.archive.org/web/20100422034436/http://www.prb.org/pdf09/09wpds_eng.pdf |date=April 22, 2010 }}.

2008 estimate: (i) Carl Haub, 2008, [http://www.prb.org/pdf08/08WPDS_Eng.pdf "2008 World Population Data Sheet"] {{Webarchive|url=https://web.archive.org/web/20171219150624/http://www.prb.org/pdf08/08WPDS_Eng.pdf |date=December 19, 2017 }}.

2007 estimate: (j) Carl Haub, 2007, [http://www.prb.org/Publications/Datasheets/2007/2007WorldPopulationDataSheet.aspx "2007 World Population Data Sheet"] {{Webarchive|url=https://web.archive.org/web/20110224205549/http://www.prb.org/Publications/Datasheets/2007/2007WorldPopulationDataSheet.aspx |date=2011-02-24 }}.

2006 estimate: (k) Carl Haub, 2006, [http://www.prb.org/Publications/Datasheets/2006/2006WorldPopulationDataSheet.aspx "2006 World Population Data Sheet"] {{Webarchive|url=https://web.archive.org/web/20101222075621/http://prb.org/Publications/Datasheets/2006/2006WorldPopulationDataSheet.aspx |date=2010-12-22 }}.

2005 estimate: (l) Carl Haub, 2005, [http://www.prb.org/Publications/Datasheets/2005/2005WorldPopulationDataSheet.aspx "2005 World Population Data Sheet"] {{Webarchive|url=https://web.archive.org/web/20110414150237/http://www.prb.org/Publications/Datasheets/2005/2005WorldPopulationDataSheet.aspx |date=2011-04-14 }}.

2004 estimate: (m) Carl Haub, 2004, [http://www.prb.org/pdf04/04WorldDataSheet_ENG.pdf "2004 World Population Data Sheet"] {{Webarchive|url=https://web.archive.org/web/20170329104249/http://www.prb.org/pdf04/04worlddatasheet_eng.pdf |date=March 29, 2017 }}.

2003 estimate: (n) Carl Haub, 2003, [http://homepage.ntu.edu.tw/~psc/WorldPopulationDS03_Eng.pdf "2003 World Population Data Sheet"] {{Webarchive|url=https://web.archive.org/web/20190819182509/http://homepage.ntu.edu.tw/~psc/WorldPopulationDS03_Eng.pdf |date=2019-08-19 }}.

2002 estimate: (o) Carl Haub, 2002, [http://www.prb.org/pdf/worldpopulationds02_eng.pdf "2002 World Population Data Sheet"] {{Webarchive|url=https://web.archive.org/web/20171209093516/http://www.prb.org/pdf/WorldPopulationDS02_Eng.pdf |date=2017-12-09 }}.

2001 estimate: (p) Carl Haub, 2001, [http://www.ined.fr/fichier/s_rubrique/18790/publi_pdf2_pop_and_soc_english_370.en.pdf "2001 World Population Data Sheet"].

2000 estimate: (q) 2000, [http://www.prb.org/Publications/Articles/2000/9BillionWorldPopulationby2050.aspx "9 Billion World Population by 2050"] {{Webarchive|url=https://web.archive.org/web/20180201050626/http://www.prb.org/Publications/Articles/2000/9BillionWorldPopulationby2050.aspx |date=2018-02-01 }}.

1997 estimate: (r) 1997, [http://www.epidemiolog.net/evolving/DemographyBasics.pdf "Studying Populations"].

Estimates for 1995 and prior: (s) Carl Haub, 1995, [https://www.un.org/popin/popis/journals/poptoday/today0295.html "How Many People Have Ever Lived on Earth?"] ''Population Today'', Vol. 23 (no. 2), pp. 5–6.</ref>
![[United Nations Department of Economic and Social Affairs|UN]]
(2015)<ref name="The World at Six Billion, 1999">Data from [http://esa.un.org/unpd/wpp/unpp/panel_population.htm United Nations Department of Economic and Social Affairs, Population Division.]

1950–2100 estimates (only medium variants shown): (a) [http://esa.un.org/unpp/ World Population Prospects: The 2008 Revision.] {{Webarchive|url=https://web.archive.org/web/20110511162049/http://esa.un.org/unpp/ |date=2011-05-11 }}

Estimates prior to 1950: (b) [https://www.un.org/esa/population/publications/sixbillion/sixbillion.htm "The World at Six Billion", 1999.]

Estimates from 1950 to 2100: (c) [http://www.geohive.com/earth/his_history3.aspx "Population of the entire world, yearly, 1950 - 2100", 2013.] {{webarchive|url=https://web.archive.org/web/20161119132504/http://www.geohive.com/earth/his_history3.aspx |date=November 19, 2016 }}

2014: (d) [http://esa.un.org/unpd/wup/Highlights/WUP2014-Highlights.pdf "2014 World Urbanization Prospects", 2014.]

2015: (e) [http://esa.un.org/unpd/wpp/Publications/Files/Key_Findings_WPP_2015.pdf"2015 World Urbanization Prospects", 2015.] {{webarchive|url=https://web.archive.org/web/20140320035709/http://esa.un.org/unpd/wpp/unpp/panel_population.htm |date=March 20, 2014 }}</ref>
![[Angus Maddison|Maddison]]
(2008)<ref name="www.ggdc.net/maddison/Historical_Statistics">[http://www.theworldeconomy.org/publications/worldeconomy/ Angus Maddison, 2003, ''The World Economy: Historical Statistics'', Vol. 2, OECD, Paris] {{webarchive|url=https://web.archive.org/web/20080513232041/http://www.theworldeconomy.org/publications/worldeconomy/ |date=May 13, 2008 }} {{ISBN|92-64-10412-7}}.

[http://www.ggdc.net/maddison/Historical_Statistics/horizontal-file_02-2010.xls "Statistical Appendix"] {{Webarchive|url=https://web.archive.org/web/20210130172908/http://www.ggdc.net/maddison/historical_statistics/horizontal-file_02-2010.xls |date=January 30, 2021 }} (2008, ggdc.net) "The historical data were originally developed in three books: Monitoring the World Economy 1820-1992, OECD, Paris 1995; The World Economy: A Millennial Perspective, OECD Development Centre, Paris 2001; The World Economy: Historical Statistics, OECD Development Centre, Paris 2003. All these contain detailed source notes. Figures for 1820 onwards are annual, wherever possible. For earlier years, benchmark figures are shown for 1 AD, 1000 AD, 1500, 1600 and 1700." "OECD countries GDP revised and updated 1991-2003 from National Accounts for OECD Countries, vol. I, 2006. Norway 1820-1990 GDP from Ola Grytten (2004), "The Gross Domestic Product for Norway, 1830-2003" in Eitrheim, Klovland and Qvigstad (eds), Historical Monetary Statistics for Norway, 1819-2003, Norges Bank, Oslo. Latin American GDP 2000-2003 revised and updated from ECLAC, Statistical Yearbook 2004 and preliminary version of the 2005 Yearbook supplied by Andre Hofman. For Chile, GDP 1820-2003 from Rolf Lűders (1998), "The Comparative Economic Performance of Chile 1810-1995", Estudios de Economia, vol. 25, no. 2, with revised population estimates from Diaz, J., R. Lűders, and G. Wagner (2005) Chili 1810-2000: la Republica en Cifras, mimeo, Instituto de Economia, Universidad Católica de Chile. For Peru, GDP 1896-1990 and population 1896-1949 from Bruno Seminario and Arlette Beltran, Crecimiento Economico en el Peru 1896-1995, Universidad del Pacifico, 1998. " "For Asia there are amendments to the GDP estimates for South and North Korea, 1911-74, to correct an error in Maddison (2003). Estimates for the Philippines, 1902-1940 were amended in line with Richard Hooley (2005), 'American Economic Policy in the Philippines, 1902-1940', Journal of Asian Economics, 16. 1820 estimates were amended for Hong Kong, the Philippines, Singapore, Sri Lanka, Taiwan and Thailand." "Asian countries GDP revised and updated 1998-2003 from AsianOutlook, April 2005. Population estimates for all countries except China and Indonesia revised and updated 1950-2008 and 2030 from International Data Base, International Programs Center, Population Division, US Bureau of the Census, April 2005 version. China's population 1990-2003 from China Statistical Yearbook 2005, China Statistics Press, Beijing. Indonesian population 1950-2003 kindly supplied by Pierre van der Eng. The figures now include three countries previously omitted: Cook Islands, Nauru and Tuvalu."</ref>
!HYDE
(2010)<ref name="HYDE2010">Klein Goldewijk, K., A. Beusen, M. de Vos and G. van Drecht (2011). The HYDE 3.1 spatially explicit database of human induced land use change over the past 12,000 years, Global Ecology and Biogeography20(1): 73-86. {{doi|10.1111/j.1466-8238.2010.00587.x}} ([http://themasites.pbl.nl/tridion/en/themasites/hyde/download/index-2.html pbl.nl] {{Webarchive|url=https://web.archive.org/web/20210423205228/https://themasites.pbl.nl/tridion/en/themasites/hyde/download/index-2.html |date=April 23, 2021 }}). HYDE (History Database of the Global Environment), 2010. HYDE 3.1 gives estimates for 5000 BC, 1000 BC and "AD 0". HYDE estimates are higher than those by [[Colin McEvedy]] (1978) but lower than those by Massimo Livi Bacci (1989, 2012). ([https://web.archive.org/web/20150221004127/http://itbulk.org/population/world-population-history/ graphs (itbulk.org)]).</ref>
![[John Tanton|Tanton]]
(1994)<ref name="thesocialcontract.com">[http://www.thesocialcontract.com/artman2/publish/tsc0403/article_329.shtml John H. Tanton, 1994, "End of the Migration Epoch? Time For a New Paradigm", The Social Contract, Vol. 4 (no 3), pp. 162–173].</ref>
!Biraben
(1980)<ref name="French 1980, pp. 1">Slightly updated data from original paper in French: (a) Jean-Noël Biraben, 1980, "An Essay Concerning Mankind's Evolution", Population, Selected Papers, Vol. 4, pp. 1–13. Original paper in French: (b) Jean-Noël Biraben, 1979, "Essai sur l'évolution du nombre des hommes", Population, Vol. 34 (no. 1), pp. 13–25.</ref>
![[Colin McEvedy|McEvedy]] &
Jones (1978)<ref name="Richard Jones 1978">Colin McEvedy and Richard Jones, 1978, ''Atlas of World Population History'', Facts on File, New York, {{ISBN|0-7139-1031-3}}.</ref>
!Thomlinson
(1975)<ref name="ReferenceA">[[Ralph Thomlinson]], 1975, ''Demographic Problems: Controversy over population control'', 2nd Ed., Dickenson Publishing Company, Ecino, CA, {{ISBN|0-8221-0166-1}}.</ref>
!Durand
(1974)<ref name="John D. Durand 1974">John D. Durand, 1974, "Historical Estimates of World Population: An Evaluation", University of Pennsylvania, Population Center, Analytical and Technical Reports, Number 10.</ref>
![[Colin Clark (economist)|Clark]]
(1967)<ref name="Colin Clark 1967">Colin Clark, 1967, ''Population Growth and Land Use'', St. Martin's Press, New York, {{ISBN|0-333-01126-0}}.</ref>
|-
|1,656M
|1,650M
|1,563M
|1,654M<ref name="mnp.nl">[http://journals.sagepub.com/doi/pdf/10.1177/0959683609356587 Data] from [http://themasites.pbl.nl/tridion/en/themasites/hyde/index.html History Database of the Global Environment.] {{Webarchive|url=https://web.archive.org/web/20180227200550/http://themasites.pbl.nl/tridion/en/themasites/hyde/index.html |date=February 27, 2018 }} K. Klein Goldewijk, A. Beusen and P. Janssen, "HYDE 3.1: Long-term dynamic modeling of global population and built-up area in a spatially explicit way", from table on pg. 2, Netherlands Environmental Assessment Agency (MNP), Bilthoven, The Netherlands.</ref>
|1,600M
|1,633M
|1,625M
|1,600M
|1,650–1,710M
|1,668M
|}