Year	% of total population
1960	29.9684076116343
1961	29.6572877654361
1962	29.1141769265489
1963	28.7174148378951
1964	28.4498155568955
1965	28.2420078574974
1966	28.0432866516502
1967	27.8272416553212
1968	27.614684597346
1969	27.4493130499491
1970	27.2934312387401
1971	27.0802304623017
1972	26.7912242081152
1973	26.4027320027807
1974	25.9107017335308
1975	25.3674545575833
1976	24.7873082433011
1977	24.1727304453939
1978	23.5499958134424
1979	22.9130224657453
1980	22.3019794150012
1981	21.7409148476527
1982	21.1831490479843
1983	20.6148042681495
1984	20.0234802452789
1985	19.4525012359029
1986	18.9839315394955
1987	18.6287354514909
1988	18.3952371709092
1989	18.2727770117961
1990	18.2448308239232
1991	18.2798500975371
1992	18.3290392480604
1993	18.375635676043
1994	18.4144725177471
1995	18.4232185729887
1996	18.4102432288693
1997	18.4254158934427
1998	18.4788999042111
1999	18.5375241268981
2000	18.5809102193295
2001	18.5894391537888
2002	18.5584852949708
2003	18.5118175517851
2004	18.4353294360216
2005	18.301847436491
2006	18.1286754601356
2007	17.9500717838027
2008	17.7869534657249
2009	17.6408314905337
2010	17.5098424112919
2011	17.3835845127903
2012	17.23349402355
2013	17.0424616738893
2014	16.8277360477398
2015	16.5960105585861
2016	16.364505134601
2017	16.1523712344102
2018	15.9420034979088
2019	15.7489795335974
2020	15.6002582801428
2021	15.5026637276371
2022	15.4249279236512
2023	15.3400624924138