Year	% of total population
1960	9.671487584732313
1961	9.916679891936289
1962	10.183303408360196
1963	10.465087135725529
1964	10.761001361215467
1965	11.068483282829076
1966	11.38806706900548
1967	11.740283605604356
1968	12.105669545942314
1969	12.486486653540707
1970	12.86635549795636
1971	13.289878743165776
1972	13.737226999443925
1973	14.172232806292396
1974	14.60739585104694
1975	14.56180225724268
1976	15.03926896913059
1977	15.529170983288285
1978	16.040911796123535
1979	16.5472845980994
1980	17.124084284456384
1981	17.62562706556459
1982	17.967758607672987
1983	18.35147339676125
1984	18.782267396779112
1985	19.23871575736197
1986	19.701169707519057
1987	20.165224396551835
1988	20.62944899710038
1989	21.071306658511425
1990	21.502401718845164
1991	21.88849556876944
1992	22.255630180573565
1993	22.627702465762713
1994	23.00529973894924
1995	23.355897446224567
1996	23.659916070057292
1997	23.984639257438573
1998	24.32233218530463
1999	24.65905810402725
2000	25.003055638381028
2001	25.400926396771318
2002	25.82053795987055
2003	26.247852005254714
2004	26.679329771958262
2005	27.128825151301108
2006	27.57329519782199
2007	27.975788841742077
2008	28.467002471347644
2009	28.962178019247105
2010	29.46488433480845
2011	29.97397761653333
2012	30.473740360521404
2013	30.980373130969475
2014	31.496958846357487
2015	32.02269585820535
2016	32.55753096999972
2017	33.097768898927335
2018	33.63809340829246
2019	34.17775774855649
2020	34.71853693657057
2021	35.26321349747943
2022	35.816253388623636
2023	36.376819458858236