Year	% of relevant age group
1972	22.2303199768066
1973	22.2318801879883
1974	22.1008701324463
1975	22.1003799438477
1976	22.1094799041748
1977	22.3332996368408
1978	22.6567802429199
1979	22.7348194122314
1980	23.2049007415771
1981	23.4747905731201
1982	23.1930599212646
1983	23.1405506134033
1984	23.2054290771484
1985	23.1652908325195
1986	22.9297695159912
1987	22.5869808197021
1988	22.7039909362793
1989	22.4872798919678
1990	22.8107395172119
1991	23.0038890838623
1992	22.5013008117676
1993	23.1672706604004
1994	23.098669052124
1995	24.1607494354248
1996	24.1924800872803
1997	24.3413200378418
1998	24.4462394714355
1999	24.4406108856201
2000	24.9192504882812
2001	25.6298408508301
2002	26.9091892242432
2003	27.7154903411865
2004	28.7368106842041
2005	30.0135707855225
2006	31.6563205718994
2007	33.4808082580566
2008	36.121711730957
2009	37.2581901550293
2010	38.4840698242188
2011	39.494270324707
2012	39.9387702941895
2013	40.5292587280273
2014	41.9378509521484
2015	42.4347496032715
2016	42.470630645752
2017	42.4599494934082
2018	42.6518287658691
2019	42.5917205810547
2020	42.8597297668457
2021	43.0465507507324