Year	% of total population
1960	9.579313225293745
1961	9.734232051817944
1962	9.893997139195262
1963	10.0375075249181
1964	10.201691067673472
1965	10.40158489248187
1966	10.61877523976531
1967	10.835749225337118
1968	11.036763399794063
1969	11.225455350484804
1970	11.425658437946266
1971	11.62630675591987
1972	11.824712206040008
1973	12.022754489947285
1974	12.21537457619367
1975	12.399691107519486
1976	12.564537188263962
1977	12.739482771580342
1978	12.919796040160495
1979	13.072874610702964
1980	13.113570876835187
1981	13.005047973059012
1982	12.830136402818788
1983	12.633554055524607
1984	12.528170911800451
1985	12.612573504721654
1986	12.80135907323665
1987	13.001267006222283
1988	13.20393592749489
1989	13.40009059186109
1990	13.597566383225079
1991	13.79948983258519
1992	14.000568289689443
1993	14.209986127190833
1994	14.429778831285212
1995	14.66935706263707
1996	14.903018157931406
1997	15.111516797067988
1998	15.304682012139194
1999	15.502172227496038
2000	15.725602012040149
2001	15.960476050421633
2002	16.185367136212246
2003	16.38603401902456
2004	16.60249022674241
2005	16.842621977451017
2006	17.054486668421998
2007	17.202608952616096
2008	17.339717980533827
2009	17.509592005153866
2010	17.66255783837032
2011	17.86231476236804
2012	18.170562754795746
2013	18.51489761432512
2014	18.880792700129
2015	19.223579277285612
2016	19.541093628719967
2017	19.84737019338527
2018	20.148755745916038
2019	20.459726345631044
2020	20.762261349572302
2021	21.04050556559909
2022	21.251323715433138
2023	21.533176426029073