Year	% of total population
1960	17.814648766260646
1961	18.62933587833466
1962	19.48589829801465
1963	20.170400840189043
1964	20.870941837006683
1965	21.582276803609705
1966	22.309430037130188
1967	23.052979241374562
1968	23.813984940697345
1969	24.585398381204087
1970	25.375360865404094
1971	26.180234265799818
1972	27.00282910762593
1973	27.842806035498402
1974	28.728516465436506
1975	29.759282678999465
1976	30.9307933503781
1977	32.15684619627109
1978	33.44892734518577
1979	34.812757728643824
1980	36.25430229557809
1981	37.76342660408225
1982	39.36239886923961
1983	41.06691545614906
1984	42.66065655912185
1985	43.450235266453504
1986	43.66987424601022
1987	43.89885290228606
1988	44.15147141837702
1989	44.41592858156148
1990	44.71255766767906
1991	45.02818351391848
1992	45.36374663917447
1993	45.64438386411366
1994	45.93409310585115
1995	46.29558521669148
1996	46.700821381845806
1997	47.74564640385498
1998	48.775656534223806
1999	49.563241983929906
2000	49.792407858252794
2001	50.04546570619658
2002	51.02180683113801
2003	51.79529137696578
2004	52.25356278782009
2005	52.60383044288084
2006	52.877713217579526
2007	53.191329639168025
2008	53.704345801865315
2009	53.84200524754359
2010	53.90514939101608
2011	54.462747828636346
2012	55.28433947056144
2013	56.326011284849876
2014	57.39675998981569
2015	58.48902512565195
2016	59.6018295588977
2017	60.73451623954792
2018	61.8868522358319
2019	62.53376351011617
2020	63.17539591040189
2021	63.80556516100775
2022	64.44140315662673
2023	65.07622809659091