Year	% of total population
1960	60.7655179650143
1961	61.0877830108381
1962	61.3479583817514
1963	61.5683477064571
1964	61.7658268049968
1965	61.9400795180584
1966	62.0895407897693
1967	62.2087312699839
1968	63.5030105533238
1969	65.6374254227852
1970	67.2783510688262
1971	68.4104808817084
1972	69.2069689679077
1973	69.7777807974707
1974	70.1954447053084
1975	70.5169729514864
1976	70.7538706268714
1977	70.8372650351342
1978	70.7734799082499
1979	70.6305891780743
1980	70.4432137334722
1981	69.8188478249014
1982	68.846672877478
1983	67.9663890262546
1984	67.1730624742516
1985	66.4847455956206
1986	66.2841961275879
1987	66.4745235924156
1988	66.6401770881776
1989	66.7852040360746
1990	66.913734750554
1991	67.0302925288653
1992	67.1392206238355
1993	67.2425115279919
1994	67.3423717402655
1995	67.4464705660012
1996	67.6223940670143
1997	67.8409420713378
1998	68.0255928356492
1999	68.1819546527383
2000	68.3163513450388
2001	68.4330776637587
2002	68.5347948553179
2003	68.6252554450139
2004	68.7086921496021
2005	69.0357587597083
2006	69.9759173080621
2007	71.1962488999806
2008	72.184080409977
2009	72.7945721090543
2010	72.8030855820087
2011	72.4250907121171
2012	72.0646086558417
2013	71.7188611729616
2014	71.387618604947
2015	71.072398599558
2016	70.7746927124546
2017	70.4926702877806
2018	70.2211414252844
2019	69.9528108786508
2020	69.722908375092
2021	69.5348230059438
2022	69.3534004248856
2023	69.1780628317858