Year	% of total population
1960	61.3
1961	61.564
1962	61.828
1963	62.091
1964	62.354
1965	62.615
1966	62.876
1967	63.136
1968	63.396
1969	63.654
1970	63.912
1971	64.197
1972	64.606
1973	65.011
1974	65.41499999999999
1975	65.81700000000001
1976	66.217
1977	66.613
1978	67.00800000000001
1979	67.40100000000001
1980	67.791
1981	68.09100000000001
1982	68.11
1983	68.129
1984	68.149
1985	68.168
1986	68.187
1987	68.293
1988	68.398
1989	68.503
1990	68.608
1991	68.738
1992	68.924
1993	69.10900000000001
1994	69.294
1995	69.47800000000001
1996	69.6
1997	69.584
1998	69.568
1999	69.551
2000	69.535
2001	69.505
2002	69.443
2003	69.381
2004	69.319
2005	69.257
2006	69.195
2007	69.133
2008	69.071
2009	69.008
2010	68.946
2011	68.90899999999999
2012	68.941
2013	68.973
2014	69.005
2015	69.038
2016	69.07
2017	69.086
2018	69.086
2019	69.069
2020	69.037
2021	68.988
2022	68.923
2023	68.84100000000001