Year	% of total population
1960	58.67706836359231
1961	59.2154843161942
1962	59.74999901943201
1963	60.3332472933458
1964	60.91584059500259
1965	61.50212878952452
1966	62.07312901770941
1967	62.6121370611453
1968	63.117434601082266
1969	63.571180953772654
1970	64.01808277433446
1971	64.46426577606229
1972	64.87549416322145
1973	65.26774603096777
1974	65.64775509847286
1975	65.98465280847691
1976	66.2921146458444
1977	66.61912137818905
1978	66.95558804725346
1979	67.28011311482182
1980	67.58898601706295
1981	67.86149952434693
1982	68.0588316716811
1983	68.22204302475173
1984	68.35544274340623
1985	68.47865750679962
1986	68.6291114073034
1987	68.83820458103807
1988	69.04304950224875
1989	69.19709899662153
1990	69.36667897968312
1991	69.55903692104008
1992	69.71592755335988
1993	69.84571795390002
1994	69.9860708267672
1995	70.12686457636737
1996	70.26683718674505
1997	70.4015474249864
1998	70.53317531282293
1999	70.66978946390088
2000	70.8257908579784
2001	71.0123165399681
2002	71.24048310213063
2003	71.46284673091186
2004	71.68118007943342
2005	71.89996100386668
2006	72.11664071933617
2007	72.33636417602189
2008	72.55497180764826
2009	72.76330965823203
2010	72.97215410206415
2011	73.16782326372892
2012	73.35662153477625
2013	73.539117148355
2014	73.71747628051413
2015	73.90777231195153
2016	74.1046242966669
2017	74.30702667597716
2018	74.51693539507845
2019	74.73866337774645
2020	74.96054006814478
2021	75.1964307155807
2022	75.46544620873357
2023	75.71272660948758