Year	% of total population
1960	69.809
1961	68.888
1962	67.926
1963	66.94800000000001
1964	65.95400000000001
1965	64.94800000000001
1966	63.927
1967	62.894
1968	61.847
1969	60.793
1970	59.726
1971	58.649
1972	57.563
1973	56.473
1974	55.374
1975	54.271
1976	53.162
1977	52.052
1978	50.939
1979	49.825
1980	48.71
1981	47.599
1982	46.95
1983	46.677
1984	46.404
1985	46.132
1986	45.86
1987	45.588
1988	45.316
1989	45.045
1990	44.774
1991	44.503
1992	44.233
1993	43.963
1994	43.248
1995	42.402
1996	41.559
1997	40.724
1998	39.893
1999	39.067
2000	38.247
2001	37.435
2002	36.629
2003	35.394999999999996
2004	33.997
2005	32.629999999999995
2006	31.290000000000006
2007	29.980000000000004
2008	28.700000000000003
2009	27.458
2010	26.247
2011	25.173000000000002
2012	24.197999999999993
2013	23.251000000000005
2014	22.33
2015	21.433999999999997
2016	20.563999999999993
2017	19.723
2018	18.926000000000002
2019	18.171999999999997
2020	17.459999999999994
2021	16.787000000000006
2022	16.152
2023	15.554000000000002