Year	% of total population
1960	66.122
1961	65.53399999999999
1962	64.94
1963	64.394
1964	63.878
1965	63.36
1966	62.838
1967	62.314
1968	61.785
1969	61.256
1970	60.722
1971	60.187
1972	59.648
1973	59.108
1974	58.543
1975	57.637
1976	56.724
1977	55.809
1978	54.889
1979	53.966
1980	53.039
1981	52.112
1982	51.182
1983	50.342
1984	49.562
1985	48.785
1986	48.007
1987	47.231
1988	46.454
1989	45.682
1990	44.91
1991	44.291
1992	43.774
1993	43.26
1994	42.746
1995	42.234
1996	41.723
1997	41.215
1998	40.709
1999	40.204
2000	39.701
2001	39.201
2002	38.882
2003	38.684
2004	38.486
2005	38.289
2006	38.093
2007	37.896
2008	37.7
2009	37.505
2010	37.31
2011	37.149
2012	37.012
2013	36.875
2014	36.739
2015	36.602
2016	36.466
2017	36.33
2018	36.179
2019	36.014
2020	35.834
2021	35.638999999999996
2022	35.43000000000001
2023	35.208