Year	% of total population
1960	73.402
1961	72.759
1962	72.105
1963	71.44200000000001
1964	70.768
1965	70.087
1966	69.396
1967	68.696
1968	67.987
1969	67.271
1970	66.54599999999999
1971	65.729
1972	64.896
1973	64.056
1974	63.206
1975	62.348
1976	61.481
1977	60.609
1978	59.729
1979	58.842
1980	57.956
1981	57.193
1982	56.426
1983	55.655
1984	54.881
1985	54.107
1986	53.329
1987	52.55
1988	51.768
1989	50.988
1990	50.206
1991	49.424
1992	48.186
1993	46.891
1994	45.598
1995	44.312
1996	43.031
1997	41.763
1998	40.504
1999	39.258
2000	38.023
2001	37.078
2002	36.144
2003	35.22
2004	34.306
2005	33.406000000000006
2006	32.516999999999996
2007	31.64
2008	30.775000000000006
2009	29.924999999999997
2010	29.087999999999994
2011	28.391000000000005
2012	27.724999999999994
2013	27.069999999999993
2014	26.423000000000002
2015	25.787000000000006
2016	25.159999999999997
2017	24.552999999999997
2018	23.964
2019	23.393
2020	22.840000000000003
2021	22.304000000000002
2022	21.786
2023	21.284000000000006