Year	% of total population
1960	40.248
1961	39.98
1962	39.796
1963	39.613
1964	39.43
1965	39.247
1966	39.064
1967	38.882
1968	38.7
1969	38.519
1970	38.337
1971	38.087
1972	37.768
1973	37.45
1974	37.133
1975	36.817
1976	36.502
1977	36.189
1978	35.876999999999995
1979	35.565
1980	35.254999999999995
1981	34.896
1982	34.489000000000004
1983	34.084
1984	33.681
1985	33.281000000000006
1986	32.882999999999996
1987	32.486999999999995
1988	32.093999999999994
1989	31.703999999999994
1990	31.316000000000003
1991	30.671000000000006
1992	29.777
1993	28.900000000000006
1994	28.037999999999997
1995	27.191000000000003
1996	26.36
1997	25.546999999999997
1998	24.75
1999	23.97
2000	23.205
2001	22.17
2002	20.887
2003	19.659000000000006
2004	18.486000000000004
2005	17.370000000000005
2006	16.364000000000004
2007	15.460999999999999
2008	14.597999999999999
2009	13.712000000000003
2010	12.866
2011	12.120999999999995
2012	11.412000000000006
2013	10.813000000000002
2014	10.310000000000002
2015	9.826999999999998
2016	9.364999999999995
2017	8.923000000000002
2018	8.510000000000005
2019	8.123999999999995
2020	7.763999999999996
2021	7.427999999999997
2022	7.114000000000004
2023	6.820999999999998