Year	% of total population
1960	52.74
1961	52.703
1962	52.665
1963	52.628
1964	52.659
1965	52.891
1966	53.123
1967	53.356
1968	53.588
1969	53.82
1970	54.052
1971	54.284
1972	53.24
1973	50.913
1974	48.579
1975	46.251
1976	43.936
1977	41.654
1978	39.403
1979	37.197
1980	35.040000000000006
1981	34.965
1982	34.89
1983	34.816
1984	34.741
1985	34.666
1986	34.592
1987	34.516999999999996
1988	34.443
1989	34.367999999999995
1990	34.294
1991	34.22
1992	34.146
1993	34.072
1994	33.998000000000005
1995	33.92400000000001
1996	33.849999999999994
1997	33.777
1998	33.703
1999	33.629000000000005
2000	33.556
2001	33.483000000000004
2002	33.409000000000006
2003	33.336
2004	33.263000000000005
2005	33.318
2006	33.385000000000005
2007	33.453
2008	33.521
2009	33.587999999999994
2010	33.656000000000006
2011	33.724000000000004
2012	33.792
2013	33.86
2014	33.911
2015	33.944
2016	33.959999999999994
2017	33.959
2018	33.94
2019	33.905
2020	33.851
2021	33.781000000000006
2022	33.693
2023	33.589