Year	% of total population
1960	74.057
1961	73.606
1962	73.149
1963	72.686
1964	72.219
1965	71.748
1966	71.271
1967	70.78999999999999
1968	70.303
1969	69.813
1970	69.31700000000001
1971	68.818
1972	68.313
1973	67.805
1974	67.292
1975	66.775
1976	66.253
1977	65.729
1978	65.2
1979	64.667
1980	64.13
1981	63.591
1982	63.047
1983	62.5
1984	61.95
1985	61.398
1986	60.842
1987	60.283
1988	59.72
1989	59.157
1990	58.591
1991	58.051
1992	57.694
1993	57.337
1994	56.979
1995	56.62
1996	56.259
1997	55.9
1998	55.539
1999	55.177
2000	54.814
2001	54.452
2002	54.086
2003	53.717
2004	53.344
2005	52.968
2006	52.588
2007	52.206
2008	51.82
2009	51.431
2010	51.039
2011	50.644
2012	50.246
2013	49.846
2014	49.442
2015	49.036
2016	48.627
2017	48.216
2018	47.802
2019	47.386
2020	46.968
2021	46.548
2022	46.125
2023	45.701