Year	% of total population
1960	76.576
1961	75.78399999999999
1962	74.973
1963	74.144
1964	73.297
1965	72.434
1966	71.553
1967	70.655
1968	69.74
1969	68.811
1970	67.932
1971	67.12100000000001
1972	66.299
1973	65.469
1974	64.628
1975	63.778
1976	62.918
1977	62.052
1978	61.178
1979	60.36
1980	59.613
1981	58.864
1982	58.109
1983	57.351
1984	56.588
1985	55.824
1986	55.056
1987	54.286
1988	53.512
1989	53.144
1990	53.238
1991	53.331
1992	53.425
1993	53.519
1994	53.613
1995	53.706
1996	53.8
1997	54.203
1998	54.606
1999	55.008
2000	55.411
2001	55.811
2002	56.211
2003	56.611
2004	57.01
2005	57.225
2006	57.256
2007	57.287
2008	57.318
2009	57.349
2010	57.38
2011	57.411
2012	57.442
2013	57.473
2014	57.504
2015	57.51
2016	57.489
2017	57.443
2018	57.371
2019	57.274
2020	57.151
2021	57.002
2022	56.827
2023	56.627