Year	% of relevant age group
1972	56.06731
1973	56.35546
1974	64.99459
1975	67.12429
1976	69.64995
1977	71.26546
1978	75.84165
1979	82.72693
1980	79.9767
1981	81.0231
1982	82.51275
1983	80.48419
1984	79.28375
1985	78.65457
1986	75.95512
1987	74.86146
1988	73.9117
1989	74.94478
1990	73.64499
1991	72.5365
1992	73.01046
1993	74.35173
1994	74.36933
1995	78.20009
1996	78.76574
1997	87.61039
1998	84.52343
1999	82.15688
2000	90.25148
2001	96.71116
2002	100.4284
2003	102.4814
2004	101.9532
2005	100.7353
2006	102.1415
2007	103.3526
2008	103.7022
2009	104.4652
2010	102.9014
2011	103.1341
2012	104.0503
2013	104.9086
2014	105.6453
2015	106.116
2016	106.8701
2017	106.4597
2018	105.3131