Year	% of total population
1960	69.295
1961	69.057
1962	68.985
1963	68.914
1964	68.842
1965	68.77
1966	68.69800000000001
1967	68.626
1968	68.554
1969	68.452
1970	68.26
1971	68.06700000000001
1972	67.87299999999999
1973	67.679
1974	67.48400000000001
1975	67.288
1976	67.092
1977	66.89500000000001
1978	66.69800000000001
1979	66.5
1980	66.238
1981	65.976
1982	65.713
1983	65.44800000000001
1984	65.18299999999999
1985	64.917
1986	64.65
1987	64.381
1988	64.112
1989	63.842
1990	63.572
1991	63.3
1992	62.751
1993	62.201
1994	61.646
1995	61.089
1996	60.527
1997	59.965
1998	59.399
1999	58.831
2000	58.259
2001	57.565
2002	56.499
2003	55.427
2004	54.349
2005	53.269
2006	52.185
2007	51.098
2008	50.009
2009	48.924
2010	47.837
2011	46.753
2012	45.67
2013	44.613
2014	43.577
2015	42.566
2016	41.579
2017	40.617
2018	39.681
2019	38.771
2020	37.888
2021	37.031
2022	36.201
2023	35.397000000000006