Year	% of relevant age group
1973	37.8593902587891
1974	37.890308380127
1975	39.9423789978027
1976	41.7119102478027
1977	43.091739654541
1978	52.678150177002
1979	44.9695587158203
1980	44.5242614746094
1981	45.0079917907715
1982	44.5195083618164
1983	45.1769790649414
1984	47.0906715393066
1985	48.788761138916
1986	49.363899230957
1987	51.1068801879883
1988	49.8616485595703
1990	54.516429901123
1991	51.1294288635254
1999	44.6377487182617
2000	46.6730003356934
2003	52.4137191772461
2004	53.627799987793
2006	47.0485000610352
2007	49.4822998046875
2008	64.8987426757812
2009	64.7765579223633
2010	66.5326995849609
2011	65.2488021850586
2012	69.4360809326172
2014	68.9205474853516
2015	70.2440490722656
2016	69.1732330322266
2017	64.4313278198242
2018	60.9040107727051
2019	62.0059204101562
2020	62.9659996032715
2021	65.1495819091797
2022	66.2083892822266