Year	% of total population
1960	29.988812821458517
1961	30.060100090387795
1962	29.961609868733085
1963	29.806157182490047
1964	29.693440837071567
1965	29.62638907772107
1966	29.496470014353545
1967	29.335429696862366
1968	29.200854324898447
1969	29.033270147698747
1970	28.838438307581832
1971	28.61190145929795
1972	28.363922772336235
1973	28.086369161551104
1974	27.789008194939804
1975	27.46439900946507
1976	27.116251460461818
1977	26.765801105570137
1978	26.40609653712968
1979	26.04062421969395
1980	25.696558619870178
1981	25.39705272179161
1982	25.11586168719361
1983	24.81328427722558
1984	24.50671300984443
1985	24.20258601865375
1986	23.892988677376895
1987	23.603074499242517
1988	23.348391984347497
1989	23.113623566744593
1990	22.903300799858552
1991	22.706795567302308
1992	22.524837357671164
1993	22.35602257792469
1994	22.168893979025352
1995	21.95987605568995
1996	21.7486741539766
1997	21.548635121942752
1998	21.357874811604454
1999	21.172392697084156
2000	20.981845563681134
2001	20.781157778477233
2002	20.575108790313514
2003	20.36221007288382
2004	20.14019303277033
2005	19.913308842760344
2006	19.695253385339548
2007	19.496603027354418
2008	19.327116671083687
2009	19.174322883416327
2010	19.027099313418567
2011	18.8902821584755
2012	18.74879179675335
2013	18.606043715742533
2014	18.461629985653936
2015	18.318649316785784
2016	18.18521052991706
2017	18.064238538304377
2018	17.932731351106344
2019	17.782165271629548
2020	17.617229477085786
2021	17.436910872611826
2022	17.225843550979075
2023	16.99594215669544