Year	% of relevant age group
1971	28.58139
1972	30.02953
1978	32.22519
1979	33.86392
1980	34.02534
1981	35.99921
1982	38.18074
1983	42.61711
1984	42.26697
1985	41.89611
1986	38.40988
1988	45.25172
1989	41.9196
1990	44.63561
1992	44.81404
1994	48.30005
1996	67.76402
1997	71.8015
1998	68.31919
2000	84.88374
2001	78.20846
2002	81.45768
2003	88.30308
2004	91.74041
2005	92.00184
2006	97.62414
2007	102.00957
2008	101.20569
2009	101.06178
2010	102.7799
2011	105.42257
2012	104.54931
2013	99.92462
2014	103.00984
2015	102.1901
2016	102.24062
2017	104.0423
2018	100.22302