Year	% of relevant age group
1971	44.68191
1972	48.90789
1973	57.90794
1974	47.78171
1975	64.75321
1976	55.70534
1977	63.70138
1978	61.19624
1979	84.04906
1980	64.31646
1981	76.23362
1982	75.08219
1983	68.08998
1984	67.66297
1985	68.6305
1986	66.3502
1987	73.07228
1988	70.94991
1989	69.45374
1990	72.38974
1991	79.25298
1992	73.29967
1993	77.71182
1994	71.44154
1995	76.07426
1996	77.42179
1997	77.6632
1998	88.2284
2000	99.73154
2001	101.96428
2002	103.97576
2003	103.19863
2004	107.57535
2005	107.28887
2006	120.77007
2008	158.581
2010	146.60229
2011	146.54076
2012	156.18053
2013	154.96226
2014	157.41453
2015	161.96453
2016	158.69049
2017	149.92287
2018	146.92009