Year	% of total population
1960	40.75389449559285
1961	40.5794654713902
1962	40.68561622826366
1963	41.24307369314819
1964	41.743148100167595
1965	41.96618988895501
1966	42.05127053954956
1967	41.919991374292536
1968	41.76345578216753
1969	41.68296628125468
1970	41.53743236372267
1971	41.401866741517246
1972	41.16297362484471
1973	40.91813991933161
1974	40.8529195307549
1975	40.8191512103452
1976	40.745444868269594
1977	40.29827114310555
1978	39.267805671523305
1979	38.18398358264682
1980	37.27371479583293
1981	36.449326190056084
1982	35.78639320240866
1983	35.04108718206278
1984	34.16903134401751
1985	33.36056754200011
1986	32.65708328887363
1987	32.11807299510394
1988	31.64826581182394
1989	31.259079589346303
1990	31.040648431484534
1991	30.833244835490063
1992	30.556554312379884
1993	30.26960351039422
1994	29.918018226037674
1995	29.491680551580004
1996	28.99741891934332
1997	28.404834358600915
1998	27.812625174592362
1999	27.25396313476475
2000	26.66438774720879
2001	26.011829928560243
2002	25.268663090994885
2003	24.53146597759334
2004	23.82450668784093
2005	23.096646547662356
2006	22.50263606592789
2007	22.110175367238607
2008	21.809161884800616
2009	21.572013929070508
2010	21.37720909733856
2011	21.217164998684613
2012	21.122705895308336
2013	21.068165960041448
2014	21.024758981204883
2015	20.956896955729018
2016	20.885500541119814
2017	20.857423141535925
2018	20.78190836353015
2019	20.628912863251877
2020	20.40297070455913
2021	20.098808298276584
2022	19.748357423362766
2023	19.36481879816593