Year	% of total population
1960	61.598191607379064
1961	62.081029371628645
1962	62.57702251545591
1963	63.13891649620852
1964	63.69981091057446
1965	64.2593729425897
1966	64.81748163236037
1967	65.36936127852393
1968	65.87539856936554
1969	66.30697041540711
1970	66.72827578469358
1971	67.12846260973126
1972	67.46918557897978
1973	67.78779314580301
1974	68.09494892100575
1975	68.3551158711783
1976	68.58383232977089
1977	68.83314880568217
1978	69.08443404933568
1979	69.3343535768024
1980	69.58279339159394
1981	69.82772149550442
1982	69.98584749573246
1983	70.0974379668729
1984	70.1687156767714
1985	70.22490386834964
1986	70.31738437717267
1987	70.48843047581119
1988	70.65039409413588
1989	70.76200303739647
1990	70.91274068824237
1991	71.08700799922846
1992	71.24556602949727
1993	71.41037707883491
1994	71.5911214018885
1995	71.77233077337155
1996	71.9535819373043
1997	72.13000008699751
1998	72.30318020782956
1999	72.48200143729038
2000	72.674541130924
2001	72.8906969776832
2002	73.13432168296042
2003	73.38514334898142
2004	73.63091060641011
2005	73.87395864879356
2006	74.11199966875839
2007	74.34135248022518
2008	74.56835400659178
2009	74.79635393882072
2010	75.02741429443417
2011	75.2541991083994
2012	75.46975200975432
2013	75.67660761548125
2014	75.87757303693357
2015	76.09169369100384
2016	76.30816270649406
2017	76.52953557402562
2018	76.7560473304549
2019	76.99715743409591
2020	77.2316231165689
2021	77.47596425958032
2022	77.71964892043717
2023	77.9667648961818