Year	% of relevant age group
1971	70.4636688232422
1972	65.653678894043
1973	69.2683410644531
1974	70.7647171020508
1975	74.0582275390625
1976	74.9483489990234
1977	75.6908493041992
1978	69.8356704711914
1979	47.7117385864258
1980	55.6721992492676
1981	65.847770690918
1986	81.2694396972656
1997	91.0572814941406
1999	93.7387771606445
2000	92.0659332275391
2001	89.4250869750977
2002	85.7634735107422
2003	84.6114807128906
2004	85.3723220825195
2005	88.9254913330078
2006	82.9509582519531
2007	87.790168762207
2009	90.1364822387695
2010	91.1881790161133
2013	91.9427719116211
2016	88.197151184082
2017	87.7691879272461
2018	90.4312591552734
2019	92.6637725830078
2020	96.2362289428711
2021	97.4771499633789