Year	% of relevant age group
1972	13.5678901672363
1973	13.6059198379517
1974	13.6114797592163
1975	13.6264801025391
1976	13.6348695755005
1977	13.7712602615356
1978	13.894100189209
1979	13.9812002182007
1980	14.1848096847534
1981	14.3771495819092
1982	14.5237998962402
1983	14.5906600952148
1984	14.7085695266724
1985	14.7764196395874
1986	14.6927099227905
1987	14.6303100585938
1988	14.9142599105835
1989	14.888689994812
1990	15.1373300552368
1991	15.623459815979
1992	15.4722003936768
1993	15.7894601821899
1994	15.7673301696777
1995	16.5009498596191
1996	16.6841697692871
1997	16.8250293731689
1998	16.9446201324463
1999	17.3670692443848
2000	18.1470394134521
2001	18.2967090606689
2002	19.3846797943115
2003	19.9511203765869
2004	20.5322303771973
2005	21.5966091156006
2006	22.997859954834
2007	24.5060901641846
2008	26.4947490692139
2009	28.1161804199219
2010	29.6315498352051
2011	30.8924598693848
2012	31.9694995880127
2013	33.1242599487305
2014	33.8928413391113
2015	35.4166107177734
2016	36.1997909545898
2017	36.8876609802246
2018	37.7182083129883
2019	38.3179817199707
2020	39.1313400268555
2021	39.5024490356445