Year	% of total population
1960	13.5332664752511
1961	13.4125652075301
1962	13.3886889437053
1963	13.3996085757495
1964	13.4358906642018
1965	13.5175734986763
1966	13.6057907609632
1967	13.6792131482585
1968	13.7595087063105
1969	13.8501128178607
1970	13.9530751557825
1971	14.0489677641165
1972	14.1178378159265
1973	14.1867761490224
1974	14.2609534131298
1975	14.3355025021263
1976	14.4684284055804
1977	14.6670590543457
1978	14.8664102704693
1979	15.0101094637878
1980	15.0749312414052
1981	15.0400747023578
1982	14.9223849275541
1983	14.7866581602442
1984	14.7010306157967
1985	14.6970003521945
1986	14.6915810204846
1987	14.6597780778489
1988	14.6440872351931
1989	14.6178017992135
1990	14.5745244538643
1991	14.5362452448316
1992	14.502346640941
1993	14.4713493075834
1994	14.4456026195816
1995	14.4392341443397
1996	14.4280730728454
1997	14.3958313740652
1998	14.3865585842966
1999	14.418004032815
2000	14.4694146510996
2001	14.5391115006436
2002	14.6242521225958
2003	14.7180660840021
2004	14.8363626636708
2005	14.9491921148285
2006	15.0015791135909
2007	15.0132648499424
2008	15.0748824247211
2009	15.2047572260646
2010	15.332388128654
2011	15.5991990824932
2012	15.9944143587545
2013	16.2912875326984
2014	16.5400450555426
2015	16.7608977125593
2016	17.0289180101575
2017	17.1888145749478
2018	16.9785600688756
2019	16.5863880526533
2020	16.2998027613412
2021	16.2296918929718
2022	16.3680491727941
2023	16.6493200605658