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Population, long-run history by country

Annual, Persons, thousands

Source: Maddison Project Database 2023

Population, long-run history: latest observations by country
Date	Congo - Kinshasa	Switzerland	Romania
Dec 31, 1999	51,181	7,258	22,414
Dec 31, 2000	52,782	7,296	22,262
Dec 31, 2001	54,453	7,332	22,106
Dec 31, 2002	56,170	7,384	21,931
Dec 31, 2003	57,860	7,438	21,828
Dec 31, 2004	59,599	7,488	21,704
Dec 31, 2005	61,474	7,532	21,571
Dec 31, 2006	63,479	7,579	21,443
Dec 31, 2007	65,590	7,647	21,129
Dec 31, 2008	67,800	7,738	20,779
Dec 31, 2009	70,114	7,825	20,607
Dec 31, 2010	72,550	7,884	20,485
Dec 31, 2011	75,138	7,959	20,385
Dec 31, 2012	77,792	8,044	20,296
Dec 31, 2013	80,534	8,137	20,224
Dec 31, 2014	83,368	8,237	20,151
Dec 31, 2015	86,229	8,332	20,055
Dec 31, 2016	89,193	8,423	19,938
Dec 31, 2017	92,209	8,502	19,823
Dec 31, 2018	95,232	8,565	19,713
Dec 31, 2019	98,320	8,626	19,622
Dec 31, 2020	101,499	8,689	19,496
Dec 31, 2021	104,767	8,756	19,351
Dec 31, 2022	108,171	8,834	19,266

Source: Bolt, J. and van Zanden, J.L. (2024), Maddison style estimates of the evolution of the world economy: A new 2023 update, Journal of Economic Surveys, 1-41, DOI 10.1111/joes.12618. Licensed under CC BY 4.0. The original sources are listed on each page.

All data sources

Original sources of these estimates

GDP pc: 2008 - 2022: Total Economy Database the Conference Board for all countries included in TED. Otherwise UN national accounts statistics

Switzerland

1: Scheidel, W. and Friesen, S. J., ‘The size of the economy and the distribution of income in the Roman Empire’, Journal of Roman Studies, 99 (2009), pp. 61–91
1850-2011: Stohr, Christian (2016), Trading Gains: new estimates of Swiss GDP, 1851-2008. Economic History Working Papers, 245/2016. London School of Economics and Political Science, Economic History Department, London, UK

Romania

1862–1995: Axenciuc, V. (2012). Produsul intern brut al Romaniei, Vol. 1, Institutl de Economie Nationala, Bucarest
1915-1919 & 1949: Voinea, L., Cojocaru, A., Costache, B., Grigoraș, V., Lovin, H., Neagu, C., Orțan, D., & Tănase, A. (2019). One Hundred Years of Honesty: Recovering the Lost Memory of the Romanian Economy 1918-2018.

No separate list is published for Congo - Kinshasa; the database as a whole is cited above.