Year	% of total population
1960	40.288
1961	39.546
1962	38.807
1963	38.074
1964	37.358
1965	36.657
1966	35.959999999999994
1967	35.269999999999996
1968	34.584
1969	33.907
1970	33.236000000000004
1971	32.571
1972	31.912000000000006
1973	31.262
1974	30.619
1975	29.983000000000004
1976	29.352999999999994
1977	28.733999999999995
1978	28.120999999999995
1979	27.516000000000005
1980	26.897999999999996
1981	26.156999999999996
1982	25.429000000000002
1983	24.715000000000003
1984	24.013000000000005
1985	23.325999999999993
1986	22.653000000000006
1987	21.992999999999995
1988	21.346000000000004
1989	20.715999999999994
1990	20.162000000000006
1991	19.933000000000007
1992	19.706999999999994
1993	19.482
1994	19.260000000000005
1995	19.039
1996	18.819999999999993
1997	18.604
1998	18.388999999999996
1999	18.176000000000002
2000	17.992999999999995
2001	17.950999999999993
2002	17.908
2003	17.866
2004	17.823999999999998
2005	17.781999999999996
2006	17.739999999999995
2007	17.697999999999993
2008	17.656999999999996
2009	17.614999999999995
2010	17.572999999999993
2011	17.524
2012	17.468000000000004
2013	17.403999999999996
2014	17.331999999999994
2015	17.254000000000005
2016	17.168000000000006
2017	17.075000000000003
2018	16.974999999999994
2019	16.867999999999995
2020	16.754999999999995
2021	16.635000000000005
2022	16.507999999999996
2023	16.375