Year	% of total population
1960	64.88900000000001
1961	64.17099999999999
1962	63.445
1963	62.714
1964	61.975
1965	61.233
1966	60.484
1967	59.731
1968	58.972
1969	58.21
1970	57.444
1971	56.674
1972	55.9
1973	56.119
1974	56.338
1975	56.557
1976	56.776
1977	56.995
1978	57.213
1979	57.431
1980	57.649
1981	57.866
1982	58.083
1983	58.299
1984	57.988
1985	57.675
1986	57.361
1987	57.047
1988	56.731
1989	56.416
1990	56.1
1991	56.223
1992	56.347
1993	56.47
1994	56.593
1995	56.716
1996	56.839
1997	56.962
1998	57.084
1999	57.207
2000	57.33
2001	57.441
2002	57.553
2003	57.665
2004	57.777
2005	57.888
2006	58
2007	58.111
2008	58.223
2009	58.334
2010	58.445
2011	58.556
2012	58.668
2013	58.778
2014	58.889
2015	59
2016	59.09
2017	59.159
2018	59.207
2019	59.234
2020	59.24
2021	59.225
2022	59.19
2023	59.133