Year	% of total population
1960	61.7477149889158
1961	61.2644882076564
1962	60.9759858258133
1963	60.9071595974968
1964	61.0178247234671
1965	61.1988013364462
1966	61.4005106931671
1967	61.6464583317684
1968	61.9496625782517
1969	62.3173118193923
1970	62.727191540616
1971	63.1569391734651
1972	63.6155200708259
1973	64.098232432885
1974	64.5723977891371
1975	65.033284782719
1976	65.4824964282826
1977	65.8945619296127
1978	66.242114669531
1979	66.5048712115113
1980	66.7122343848185
1981	66.9168256072202
1982	67.099508342472
1983	67.2068263163658
1984	67.2456713559969
1985	67.2526901887269
1986	67.1896022906054
1987	67.034262525231
1988	66.7896633080047
1989	66.5160272670999
1990	66.2770382196907
1991	66.0697731648507
1992	65.8987347874158
1993	65.7905763603368
1994	65.7490417186675
1995	65.7870960884354
1996	65.9398652359004
1997	66.2264221056909
1998	66.6505784329874
1999	67.1464733748579
2000	67.6076130388757
2001	68.0323708705689
2002	68.4458635646639
2003	68.8282035605836
2004	69.1924492829169
2005	69.5315114608588
2006	69.8509509074175
2007	70.1730035031599
2008	70.4689580709751
2009	70.6737468816318
2010	70.749927014815
2011	70.6339761747769
2012	70.2892193721954
2013	69.7917989288459
2014	69.2431543059312
2015	68.7273448502048
2016	68.247140792595
2017	67.7999234848076
2018	67.3904075916706
2019	66.9716396710306
2020	66.6075394079797
2021	66.330495890785
2022	66.0397225807423
2023	65.709776908096