Year	% of total population
1960	53.7341928792825
1961	53.3976058857705
1962	53.0653080441216
1963	52.814462416746
1964	52.6262711152198
1965	52.4375598558898
1966	52.2804822009953
1967	52.1699136751734
1968	52.110733259584
1969	52.1093468537736
1970	52.1725484873803
1971	52.3188488878698
1972	52.625606433833
1973	53.0733555923993
1974	53.5729853933165
1975	54.1202720387891
1976	54.7105766299981
1977	55.336140798282
1978	55.9567597100403
1979	56.5740431248147
1980	57.1945975188197
1981	57.7845605475689
1982	58.3635659692846
1983	58.9366152540054
1984	59.5120832559816
1985	60.0252694205359
1986	60.420455107143
1987	60.7309403828179
1988	60.9061167839794
1989	60.9681417043051
1990	60.9902434749241
1991	61.0120518836725
1992	61.076581929779
1993	61.1453437305137
1994	61.2556108958987
1995	61.5131358650919
1996	61.9031927513617
1997	62.3921969749263
1998	62.9511450004529
1999	63.5221476292536
2000	64.09872193905
2001	64.6638489074648
2002	65.1943466306498
2003	65.762190198444
2004	66.3273213242891
2005	66.8255493720013
2006	67.230930407674
2007	67.484250164014
2008	67.7037052878455
2009	67.9252167598062
2010	68.055379367697
2011	68.1405567795615
2012	68.2136825503168
2013	68.237556938118
2014	68.2840416320251
2015	68.4096618423713
2016	68.5472071240353
2017	68.6597247254616
2018	68.7015192931582
2019	68.6733340562363
2020	68.6441253380454
2021	68.6631670350489
2022	68.6633755497439
2023	68.624654589368