Year	% of total population
1960	53.861
1961	52.878
1962	51.901
1963	50.922
1964	49.941
1965	48.963
1966	47.984
1967	47.007
1968	46.03
1969	45.06
1970	44.091
1971	43.106
1972	42.121
1973	41.145
1974	40.174
1975	39.211
1976	38.255
1977	37.311
1978	36.375
1979	35.449
1980	34.532
1981	33.629999999999995
1982	32.738
1983	31.858000000000004
1984	30.989999999999995
1985	30.138000000000005
1986	29.296999999999997
1987	28.471000000000004
1988	27.658
1989	26.861000000000004
1990	26.078000000000003
1991	25.310000000000002
1992	24.555999999999997
1993	23.819000000000003
1994	23.096999999999994
1995	22.39
1996	21.697999999999993
1997	20.951999999999998
1998	20.218999999999994
1999	19.504000000000005
2000	18.808000000000007
2001	18.447000000000003
2002	18.120000000000005
2003	17.796999999999997
2004	17.479
2005	17.165999999999997
2006	16.857
2007	16.552000000000007
2008	16.251000000000005
2009	15.956000000000003
2010	15.665000000000006
2011	15.369
2012	15.076999999999998
2013	14.790999999999997
2014	14.507999999999996
2015	14.230000000000004
2016	13.957999999999998
2017	13.691000000000003
2018	13.430999999999997
2019	13.176000000000002
2020	12.927000000000007
2021	12.683000000000007
2022	12.444999999999993
2023	12.212000000000003