Year	% of total population
1960	23.3591554135538
1961	23.3502646390264
1962	23.25186246219
1963	23.2003648989393
1964	23.2723559499828
1965	23.4187742109053
1966	23.597107849191
1967	23.7685470217328
1968	23.9069163246101
1969	24.016749103342
1970	24.1060352282331
1971	24.1543425257933
1972	24.1085403028263
1973	23.9455894358055
1974	23.6924717628779
1975	23.3498956334719
1976	22.9230905444882
1977	22.4351344941154
1978	21.9293955943134
1979	21.4546788715328
1980	21.0244754460117
1981	20.6259267692701
1982	20.2428159026658
1983	19.8859352897754
1984	19.5691479067698
1985	19.3097062429263
1986	19.0892693685609
1987	18.9366874738083
1988	18.8961986455836
1989	18.9326560317306
1990	19.0289089268974
1991	19.1720733531745
1992	19.3282175177415
1993	19.4505074702985
1994	19.4867735900972
1995	19.4496732318133
1996	19.4020708475748
1997	19.3599274920913
1998	19.3000274597212
1999	19.2058942748599
2000	19.0578244857202
2001	18.8694806080063
2002	18.6609902100371
2003	18.4502256243982
2004	18.261942132148
2005	18.0757571969932
2006	17.8972710542286
2007	17.7664640853784
2008	17.6908633916145
2009	17.6464813465497
2010	17.6278811556178
2011	17.6294357068589
2012	17.6421204892553
2013	17.6566554068823
2014	17.6723749575135
2015	17.7212237746005
2016	17.8003904732425
2017	17.8760575913004
2018	17.9083522707734
2019	17.8740875883716
2020	17.7883500845831
2021	17.6612097379976
2022	17.4667211276054
2023	17.2166712269646