Year	% of total population
1960	16.698834779280375
1961	16.831982920402563
1962	17.01885310461076
1963	17.207628226986845
1964	17.398917323536445
1965	17.59087343390042
1966	17.785364733698554
1967	17.982277001132832
1968	18.181923642993954
1969	18.385424330103593
1970	18.595867250245885
1971	18.846156769423267
1972	19.175246174502657
1973	19.500692264557436
1974	19.84726970541011
1975	20.228190438169047
1976	20.620740139076215
1977	21.02269846855971
1978	21.434400826025577
1979	21.85960337483033
1980	22.304321358026886
1981	22.69994153118157
1982	22.963249142746967
1983	23.220235485086523
1984	23.476012474647547
1985	23.73544790152496
1986	24.00187727224579
1987	24.271533061546283
1988	24.543485800453674
1989	24.8106298906593
1990	25.07906467423147
1991	25.336239523302268
1992	25.55933621094728
1993	25.781157569343392
1994	26.00895584096549
1995	26.240197451945075
1996	26.476766669176968
1997	26.714403450997466
1998	26.951286029553106
1999	27.185145023141864
2000	27.424189877316735
2001	27.702820863047528
2002	28.039666133254507
2003	28.37639161293703
2004	28.72107854888914
2005	29.068671235820783
2006	29.418567427558752
2007	29.774648357501544
2008	30.133976109623635
2009	30.493168568931928
2010	30.85539270064633
2011	31.219043068444993
2012	31.590545925138105
2013	31.97027604561879
2014	32.35853413732981
2015	32.755806006545555
2016	33.16234063548332
2017	33.57861344235522
2018	34.00589919797481
2019	34.44463405787614
2020	34.89320578861991
2021	35.3519249926791
2022	35.82499864951431
2023	36.312297777191326