Year	% of total population
1960	48.725
1961	47.853
1962	46.981
1963	46.111
1964	45.242
1965	44.378
1966	43.517
1967	42.659
1968	41.805
1969	40.958
1970	40.136
1971	39.343
1972	38.555
1973	37.775
1974	37
1975	36.389
1976	35.781000000000006
1977	35.179
1978	34.581
1979	34.161
1980	33.95
1981	33.741
1982	33.533
1983	33.325
1984	33.117000000000004
1985	32.91
1986	32.70399999999999
1987	32.498999999999995
1988	32.294
1989	32.31
1990	32.57899999999999
1991	32.849999999999994
1992	33.122
1993	33.394000000000005
1994	33.668000000000006
1995	33.943
1996	34.218999999999994
1997	34.495999999999995
1998	34.774
1999	35.053
2000	35.334
2001	35.614999999999995
2002	35.763999999999996
2003	35.863
2004	35.962
2005	36.062
2006	36.161
2007	36.261
2008	36.36
2009	36.46
2010	36.56
2011	36.66
2012	36.76
2013	36.836
2014	36.888
2015	36.915
2016	36.918
2017	36.897
2018	36.851
2019	36.781
2020	36.687
2021	36.569
2022	36.427
2023	36.261