Year	% of total population
1960	26.1885964409313
1961	25.8363943871649
1962	25.4371843897576
1963	25.0144391700551
1964	24.5928923591849
1965	24.2306206804877
1966	23.9261950394273
1967	23.6551395000368
1968	23.4698614221273
1969	23.3880000502765
1970	23.3109886460949
1971	23.2004429198545
1972	23.0867491640664
1973	23.0079000499115
1974	23.0057458707761
1975	23.0140240838166
1976	22.9844366858022
1977	22.9551777036474
1978	22.9009906212334
1979	22.8040854307467
1980	22.6901503083422
1981	22.5605386877178
1982	22.4235088738234
1983	22.2106501550338
1984	21.9130453750717
1985	21.6339682630288
1986	21.4032973877542
1987	21.2156663476489
1988	21.0079149461595
1989	20.7028791188072
1990	20.3398922931153
1991	19.9376884711346
1992	19.4817858900238
1993	19.0121378469612
1994	18.5213171579556
1995	18.0128478889523
1996	17.5257243575338
1997	17.0316789990294
1998	16.5197396406793
1999	16.0451936286104
2000	15.6267066978286
2001	15.2088825935435
2002	14.7869228232397
2003	14.3877112905773
2004	14.024731236181
2005	13.7393674638652
2006	13.5675781054839
2007	13.5087408264932
2008	13.5230262544996
2009	13.6080811181998
2010	13.7460029260014
2011	13.8675059292363
2012	13.9936146095852
2013	14.1157160029026
2014	14.143617563499
2015	14.1107706826696
2016	14.0948812337112
2017	14.1013586142904
2018	14.0963652542866
2019	14.0620489208698
2020	14.0190362054997
2021	13.9947290591926
2022	13.9959094378861
2023	13.9700588407075