Year	% of total population
1960	65.6229787291583
1961	65.573541639398
1962	65.6320541299242
1963	65.7987366164913
1964	66.0061572753187
1965	66.1883814506653
1966	66.3308324482737
1967	66.4923247689541
1968	66.7083507235177
1969	66.9467368031981
1970	67.1694225085573
1971	67.3165752809487
1972	67.3580251441176
1973	67.3192884099123
1974	67.2546905747457
1975	67.1950877713234
1976	67.1303011849735
1977	67.0534347936626
1978	66.9832697786615
1979	66.9896857059244
1980	67.1909525851077
1981	67.5935590712546
1982	68.0500101031473
1983	68.4118917327518
1984	68.5656363567083
1985	68.5291959215752
1986	68.4562709011399
1987	68.4267661863365
1988	68.4187903457757
1989	68.4187758665171
1990	68.40411912371
1991	68.3000923517325
1992	68.1788796539456
1993	68.2093584585185
1994	68.3040229587531
1995	68.1678558798444
1996	67.871677732355
1997	67.6377849554456
1998	67.4399790125715
1999	67.2765289949969
2000	67.1425484023732
2001	67.0151654437257
2002	66.9154136464186
2003	66.8768297599368
2004	66.8385902528498
2005	66.7751281892389
2006	66.7278278877738
2007	66.6816516143794
2008	66.6426699902405
2009	66.6719685029847
2010	66.8082043966578
2011	66.8906829442203
2012	66.8260267668176
2013	66.6881573021687
2014	66.4585226047229
2015	66.1771310856054
2016	65.8847195301049
2017	65.5316864189612
2018	65.1153291022561
2019	64.6574981569714
2020	64.2363882959904
2021	63.8915499248732
2022	63.5605774425718
2023	63.2584957927504