Year	% of total population
1960	7.1773913270999
1961	7.37248545461646
1962	7.50669289439756
1963	7.6299901027998
1964	7.79166312919023
1965	8.06573393302514
1966	8.33335043327617
1967	8.54439262132424
1968	8.82346886673318
1969	9.09517384418045
1970	9.30145625065595
1971	9.52551103459583
1972	9.8057087429716
1973	10.0599550142782
1974	10.34600972586
1975	10.6493548754528
1976	10.961737658114
1977	11.3280867743722
1978	11.6682640877689
1979	11.8994695468215
1980	11.9646178643242
1981	11.8353717579349
1982	11.6104453925065
1983	11.457498303757
1984	11.4031179058239
1985	11.3223614257833
1986	11.2957298302097
1987	11.3934875480791
1988	11.5737572244816
1989	11.8248841612682
1990	12.1174019671363
1991	12.4345331553584
1992	12.7349366648107
1993	13.0596613927029
1994	13.3846984849023
1995	13.677252218487
1996	13.8980595810557
1997	13.9966752810558
1998	13.9721487253395
1999	13.8893541599119
2000	13.9561305702521
2001	14.2347037771757
2002	14.7292767845116
2003	15.2759367699756
2004	15.7183492208285
2005	16.0401041425749
2006	16.2474344614191
2007	16.2779282944503
2008	16.0584399563845
2009	15.7724518054337
2010	15.4531904354527
2011	15.2407936847272
2012	15.2179051919234
2013	15.2616324512232
2014	15.4577843624317
2015	15.7431866267116
2016	16.0331636769761
2017	16.3376068567938
2018	16.6168419169606
2019	16.9204304589202
2020	17.1900576835399
2021	17.3985575293176
2022	18.8083423751287
2023	20.1839855063461