Year	% of total population
1960	67.4136751501549
1961	66.7332234245161
1962	66.1333194796403
1963	65.602161633374
1964	65.1013567839819
1965	64.6556594354817
1966	64.2274151672511
1967	63.8051304712825
1968	63.4666023131663
1969	63.2219043963162
1970	63.0446744955523
1971	62.9482575256143
1972	62.9496077211971
1973	63.0619295656479
1974	63.2699547885922
1975	63.5792210108957
1976	63.9844460384827
1977	64.4011043440971
1978	64.8348516820129
1979	65.329647119894
1980	65.9370413218311
1981	66.7378145028552
1982	67.6378593701903
1983	68.5075056244474
1984	69.1523712022981
1985	69.4254585928213
1986	69.4791198438962
1987	69.4394591748535
1988	69.3174657765095
1989	69.1574384033907
1990	68.9575360252355
1991	68.7667653640832
1992	68.6285049703242
1993	68.4909991733261
1994	68.369268631737
1995	68.2964303857972
1996	68.2735435840689
1997	68.2816304766706
1998	68.2916576013829
1999	68.1951939972264
2000	67.9599139328551
2001	67.7047121950968
2002	67.4780855395371
2003	67.2508157803042
2004	66.9508194336933
2005	66.6050547991774
2006	66.2823143315268
2007	66.083076112059
2008	65.9864245729756
2009	65.8937124706723
2010	65.94818524025
2011	66.1038651577438
2012	66.1768560547906
2013	66.1650570931529
2014	66.044877873583
2015	65.8448584682172
2016	65.5946968485817
2017	65.2979434373687
2018	64.9792318923014
2019	64.6307203669172
2020	64.2847166479732
2021	63.9564500545325
2022	63.6285982930303
2023	63.2643375910206