Year	% of relevant age group
1971	34.86979
1973	19.95129
1974	17.7938
1975	20.14616
1976	21.54502
1977	22.5637
1978	24.50808
1979	23.27553
1980	26.2451
1981	27.63171
1982	30.92274
1983	59.79647
1984	55.10642
1985	56.35946
1986	58.71188
1987	68.1669
1988	78.24699
1989	63.00983
1990	62.74551
1991	65.39122
1992	55.47661
1993	57.60133
2000	64.37647
2001	70.59347
2002	75.91968
2003	79.84533
2004	87.20141
2005	85.15803
2006	167.23137
2007	144.21236
2008	127.05873
2009	128.09547
2010	133.86265
2011	135.33166
2012	131.59947
2013	129.86263
2014	132.54435
2015	138.94544
2016	139.50957
2017	126.37989
2018	128.05538