Year	% of total population
1960	40.5206411621133
1961	40.7966916082098
1962	41.0583085777547
1963	41.3050312732812
1964	41.4393000543008
1965	41.4429506287348
1966	41.4064358194044
1967	41.3432601322321
1968	41.2635737556371
1969	41.1663116453478
1970	41.0427732427455
1971	40.9133437381904
1972	40.7777612670904
1973	40.634775289874
1974	40.498728132146
1975	40.3547130700949
1976	40.2044552577473
1977	40.0392064500155
1978	39.85198641448
1979	39.6726130651234
1980	39.5165529454692
1981	39.3841034096548
1982	39.255600521303
1983	39.1181390719767
1984	38.984786921363
1985	38.8530506385759
1986	38.7174551166558
1987	38.5668329399317
1988	38.3875283312602
1989	38.1851367720208
1990	37.9666961365993
1991	37.7420402670341
1992	37.5183696099261
1993	37.2900373006603
1994	37.0406547467127
1995	36.7629979057651
1996	36.4554962120997
1997	36.126407112256
1998	35.7829798174871
1999	35.4196241759251
2000	35.0498099095191
2001	34.6775127342138
2002	34.3000676760153
2003	33.9162414244879
2004	33.5195711631188
2005	33.1172668727244
2006	32.7008861784617
2007	32.2698325679278
2008	31.8404390300815
2009	31.4138867963495
2010	30.9786925440977
2011	30.5338270178687
2012	30.0817204863376
2013	29.6202922080093
2014	29.1379758046843
2015	28.6342707076986
2016	28.1185314034275
2017	27.5955222466799
2018	27.0876752991977
2019	26.5940319417382
2020	26.1123335319891
2021	25.6875909789106
2022	25.3063108630078
2023	24.9003315008608