Year	% of total population
1960	82.321
1961	81.089
1962	79.78999999999999
1963	78.425
1964	76.993
1965	75.5
1966	74.794
1967	74.074
1968	73.34100000000001
1969	72.596
1970	71.837
1971	71.066
1972	70.281
1973	69.487
1974	68.679
1975	67.771
1976	66.406
1977	65.017
1978	63.6
1979	63.386
1980	63.171
1981	62.956
1982	62.74
1983	62.524
1984	62.307
1985	62.09
1986	61.873
1987	61.654
1988	61.392
1989	61.024
1990	60.655
1991	60.284
1992	59.912
1993	59.539
1994	59.165
1995	58.79
1996	58.413
1997	58.036
1998	57.658
1999	57.259
2000	56.845
2001	56.432
2002	56.017
2003	55.601
2004	55.183
2005	54.766
2006	54.348
2007	53.929
2008	53.509
2009	53.09
2010	52.67
2011	52.249
2012	51.828
2013	51.407
2014	50.986
2015	50.556
2016	50.119
2017	49.674
2018	49.221
2019	48.761
2020	48.294
2021	47.82
2022	47.339
2023	46.851