Year	% of total population
1960	63.50294171373826
1961	63.18656942091841
1962	63.06900226683327
1963	63.02839589642375
1964	63.023565287763965
1965	63.02223669088302
1966	63.00771562537847
1967	62.99429371995817
1968	62.99927187752956
1969	63.050490817344375
1970	63.14580983872784
1971	63.239753762552226
1972	63.324315432369524
1973	63.43188267561329
1974	63.545235626372516
1975	63.668790175559835
1976	63.80995348945828
1977	63.936649077269365
1978	64.07036927158379
1979	64.21316195383861
1980	64.399516296804
1981	64.6810741188207
1982	65.01190647527353
1983	65.33175719292464
1984	65.5664388226549
1985	65.6870471826833
1986	65.7431203010526
1987	65.77445644964888
1988	65.77360134671025
1989	65.75910296434118
1990	65.74415284519348
1991	65.738468276527
1992	65.72338967350744
1993	65.69723650957773
1994	65.71201664412078
1995	65.77269606560563
1996	65.88424911359074
1997	66.05150338345794
1998	66.28654056446129
1999	66.56191453899787
2000	66.80850594051577
2001	67.0315380804549
2002	67.23217923395025
2003	67.38744525804786
2004	67.49169551652815
2005	67.575401096757
2006	67.65977447897825
2007	67.76410578993917
2008	67.8626553875901
2009	67.90874414519827
2010	67.92998819817923
2011	67.85191451839201
2012	67.6306103617881
2013	67.35454004637452
2014	67.03154381655199
2015	66.69686592529595
2016	66.37862012854116
2017	66.06669905913945
2018	65.76637002253052
2019	65.47657156544555
2020	65.2253906732237
2021	65.0300493367718
2022	64.844287087797
2023	64.65657159867865