Year	% of total population
1960	25.898848799242952
1961	25.935081154690913
1962	25.83564266471426
1963	25.698840461371653
1964	25.57453689770372
1965	25.4516057620152
1966	25.316868222878256
1967	25.179075564839515
1968	25.035722535173743
1969	24.88548798021197
1970	24.703194511306243
1971	24.506977411172286
1972	24.314203615548227
1973	24.113387218406498
1974	23.91455681522718
1975	23.712869474441124
1976	23.502204432530334
1977	23.267600592593485
1978	22.98718616298908
1979	22.671532914165752
1980	22.359206329453883
1981	22.057234734404936
1982	21.737725483710985
1983	21.405386380233594
1984	21.08097476891498
1985	20.776309889936503
1986	20.485018315110842
1987	20.202418729218937
1988	19.940797926215456
1989	19.681412832785885
1990	19.41644913560254
1991	19.12779578547114
1992	18.84627135106917
1993	18.597257308602238
1994	18.333960479287814
1995	18.052838830688206
1996	17.77509500542318
1997	17.515228508109498
1998	17.273884495122832
1999	17.048851493735146
2000	16.827326248712446
2001	16.606671871376427
2002	16.391283574211535
2003	16.182353460875916
2004	15.978665119111989
2005	15.795529716026419
2006	15.644381049498064
2007	15.528001273916026
2008	15.45698419997718
2009	15.426660176500018
2010	15.4115975783641
2011	15.395115536798588
2012	15.362409307576659
2013	15.323962318893113
2014	15.279265787474479
2015	15.232354866722119
2016	15.195754257911805
2017	15.17747999815004
2018	15.150957277056465
2019	15.103643766290006
2020	15.039242945878913
2021	14.962108647027927
2022	14.836812918078056
2023	14.692895489319662