Year	% of total population
1960	13.122139792388207
1961	12.960004161588538
1962	12.781966017392335
1963	13.106105929585828
1964	13.981018241424112
1965	14.904029426450144
1966	15.885005848369213
1967	16.91785172567462
1968	18.002573608522454
1969	19.133430957854642
1970	20.30886357796538
1971	21.50462006879217
1972	22.70217094520438
1973	23.898869167208133
1974	25.134529189927825
1975	25.721743367305077
1976	26.191686190945767
1977	26.694489309747706
1978	27.221134340958926
1979	27.782311963992573
1980	28.37652666070897
1981	29.00190865305059
1982	29.66966617903834
1983	30.364829959424554
1984	31.09959975990956
1985	31.877121032222426
1986	32.7140608761221
1987	33.60889205082997
1988	34.55735686058891
1989	35.55625146426872
1990	36.626509246028824
1991	37.79912738326181
1992	39.12628353687646
1993	39.4268252960629
1994	39.47092934879424
1995	39.546966764585065
1996	39.655404249706855
1997	39.77684843656031
1998	39.91703048663139
1999	40.080106008379005
2000	40.27122078358446
2001	40.48424225215974
2002	40.72680008743154
2003	41.01237851038452
2004	41.3524951263234
2005	41.720274301895714
2006	41.824064812213905
2007	41.94298287413502
2008	41.715937393814926
2009	41.53251057083436
2010	41.57437956551575
2011	41.919216794034156
2012	42.38634970351744
2013	42.89227303373449
2014	43.447716591061244
2015	44.053398354703816
2016	44.627575130318256
2017	45.08132074046938
2018	45.500695311197774
2019	45.44703012183816
2020	46.1843614266002
2021	47.17531066973504
2022	47.47125284477772
2023	47.628086429150926