Year	% of relevant age group
1981	23.5289192199707
1983	24.1485195159912
1984	24.6195907592773
1985	25.0282707214355
1986	25.3376197814941
1987	24.9989891052246
1988	24.6832904815674
1989	24.5597896575928
1990	24.1720790863037
1991	24.2131500244141
1992	24.0133304595947
1993	24.6095504760742
1994	25.014799118042
1995	26.3921909332275
1996	27.0101509094238
1997	27.1285400390625
1998	27.4799709320068
1999	27.5965309143066
2000	27.7130107879639
2001	28.8458595275879
2002	30.3910293579102
2003	29.4426193237305
2004	29.4333190917969
2005	30.3676300048828
2006	31.6025295257568
2007	32.9924201965332
2008	34.6226806640625
2009	35.8852806091309
2010	37.3546714782715
2011	38.5847282409668
2012	39.3896484375
2013	40.2839088439941
2014	41.081470489502
2015	41.8099212646484
2016	42.1464500427246
2017	42.476390838623
2018	42.6168212890625
2019	43.2015113830566
2020	44.2693405151367