Year	% of total population
1960	65.791
1961	65.106
1962	64.414
1963	63.716
1964	63.011
1965	62.303
1966	61.655
1967	61.165
1968	60.672
1969	60.178
1970	59.681
1971	59.182
1972	58.681
1973	58.179
1974	57.675
1975	57.169
1976	56.661
1977	56.058
1978	55.351
1979	54.642
1980	53.93
1981	53.219
1982	52.505
1983	51.79
1984	51.074
1985	50.359
1986	49.643
1987	48.927
1988	48.21
1989	47.496
1990	46.783
1991	46.07
1992	45.773
1993	45.926
1994	46.078
1995	46.231
1996	46.384
1997	46.537
1998	46.689
1999	46.842
2000	46.996
2001	47.148
2002	47.22
2003	47.088
2004	46.957
2005	46.826
2006	46.695
2007	46.564
2008	46.433
2009	46.302
2010	46.171
2011	46.04
2012	46.026
2013	46.063
2014	46.1
2015	46.113
2016	46.1
2017	46.064
2018	46.002
2019	45.916
2020	45.806
2021	45.671
2022	45.511
2023	45.328