Year	% of total population
1960	53.2837459485421
1961	53.0994112392806
1962	52.9599357560536
1963	52.8896076614872
1964	52.9196455447404
1965	53.0272137853503
1966	53.1712448123998
1967	53.359040029964
1968	53.5926010126682
1969	53.8645183789202
1970	54.1653550967042
1971	54.488154399404
1972	54.8319586499622
1973	55.1933035445912
1974	55.5731241986474
1975	55.9642541711969
1976	56.3537194215674
1977	56.7402581919382
1978	57.1165949346905
1979	57.4689591046314
1980	57.786065655092
1981	58.0630444302766
1982	58.3030491575517
1983	58.515373304564
1984	58.7189217318629
1985	58.9339154897045
1986	59.1666552984208
1987	59.4152631832359
1988	59.6870143452565
1989	59.9786071822358
1990	60.2949836664584
1991	60.6460703476139
1992	61.0319715539349
1993	61.4462278121097
1994	61.8799539859717
1995	62.3295654041973
1996	62.7918389154209
1997	63.2625987762549
1998	63.7318023462299
1999	64.1983065508217
2000	64.6622024162058
2001	65.1115136226201
2002	65.5469864000799
2003	65.9719886205759
2004	66.3696365138188
2005	66.7297673175833
2006	67.0644423898437
2007	67.384150554683
2008	67.7009549327213
2009	68.0191083119681
2010	68.3373532771192
2011	68.6505129931381
2012	68.9488468055813
2013	69.2259608751097
2014	69.4444658450841
2015	69.5960091858107
2016	69.7265502011224
2017	69.8240972301091
2018	69.8545804800066
2019	69.8594635681549
2020	69.8744739258577
2021	69.8782675323868
2022	69.8519813653299
2023	69.7845192545324