Year	% of total population
1960	12.411388121698685
1961	12.758634945345023
1962	13.115309581915026
1963	13.489960205343744
1964	13.887359024654229
1965	14.298828176628373
1966	14.705944657916923
1967	15.126628534342535
1968	15.55948563758941
1969	16.007485316257902
1970	16.4387242486291
1971	16.877342623409742
1972	17.325179138529883
1973	17.776348039735
1974	18.211019112968017
1975	18.65408128405932
1976	19.10448850230142
1977	19.55442602877083
1978	20.02115104794283
1979	20.426000515697083
1980	20.85153802642891
1981	21.261476247378646
1982	21.649270450547938
1983	22.073827566446717
1984	22.545680179146355
1985	23.05934049923166
1986	23.57324498027946
1987	24.074080617028834
1988	24.558403534285215
1989	25.006528884403707
1990	25.44093926815462
1991	25.821463841927777
1992	26.191287364779633
1993	26.550103526127497
1994	26.918453337610178
1995	27.256150826812892
1996	27.51584917368127
1997	27.80236147889542
1998	28.10347064615244
1999	28.40442618704038
2000	28.71730363248048
2001	29.06764902834595
2002	29.407665824794652
2003	29.751668647637914
2004	30.102086283450834
2005	30.474914614120713
2006	30.853910972179246
2007	31.175255255580478
2008	31.611910938099715
2009	32.04533492523908
2010	32.48741865273069
2011	32.93201039876409
2012	33.35929314021156
2013	33.792212051476525
2014	34.23312074702318
2015	34.68723235469906
2016	35.15007875357716
2017	35.61293248516896
2018	36.07895779502372
2019	36.55075934789227
2020	37.0293808526959
2021	37.51579432462554
2022	38.01212389621353
2023	38.51736430648775