Year	% of total population
1960	67.3047151887129
1961	67.1386484196377
1962	67.032305995936
1963	67.0034400969943
1964	67.0010738622805
1965	66.9966480979262
1966	66.9646334392066
1967	66.8829151353501
1968	66.7423059173952
1969	66.6112252291219
1970	66.5117427594364
1971	66.3871312825939
1972	66.2938189682977
1973	66.2914781515825
1974	66.3368656792098
1975	66.4154291515624
1976	66.5277916176734
1977	66.6321891593291
1978	66.7204206270359
1979	66.8082232294378
1980	66.9094249209042
1981	67.0638638883082
1982	67.2427503761595
1983	67.3552976257757
1984	67.4145816824348
1985	67.4707657402497
1986	67.4542919250551
1987	67.3215228898268
1988	67.1155658461968
1989	66.8889888868592
1990	66.67230610945
1991	66.4480747035048
1992	66.2183493945567
1993	66.0497592073329
1994	66.0029169893432
1995	66.054769944406
1996	66.157568941961
1997	66.321278461262
1998	66.6061753529269
1999	66.950487985969
2000	67.2280111906666
2001	67.4682139383732
2002	67.6828261706928
2003	67.7923343599167
2004	67.8238860002218
2005	67.8445509752675
2006	67.8257490200385
2007	67.759034361755
2008	67.6199026047102
2009	67.4185643413602
2010	67.2209848964838
2011	66.948743701173
2012	66.5531282077252
2013	66.0598778283784
2014	65.5393803899377
2015	65.0676257916534
2016	64.5912086085668
2017	64.1108773634974
2018	63.7265480162665
2019	63.3341429455082
2020	62.9495923148127
2021	62.7586624608641
2022	62.5837070306611
2023	62.3239718469696