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

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.