Year	% of relevant age group
1977	97.22649
1978	96.58981
1979	96.50889
1980	95.82468
1981	90.77191
1982	91.79793
1983	90.74973
1984	93.44276
1985	92.91297
1986	94.57201
1987	98.37288
1988	100.68201
1989	103.8531
1990	104.47658
1991	99.55913
1992	99.8438
1993	98.60211
1994	96.72973
1996	103.46027
1998	104.64399
1999	99.46056
2000	98.72904
2001	94.34522
2002	92.52253
2003	93.2522
2004	94.02088
2005	93.91699
2006	94.32027
2007	95.44852
2008	94.64971
2009	94.21146
2010	95.63043
2011	97.46659
2012	99.60376
2013	97.11105
2014	97.20415
2015	98.84066
2016	99.49892
2017	101.6486