Year	% of relevant age group
1987	99.0743
1988	97.51564
1989	95.88649
1990	99.57903
1991	101.71865
1992	100.50715
1993	98.0833
1994	95.90091
1995	95.12423
1996	101.40172
1998	103.92543
1999	101.77534
2000	101.15187
2001	97.76235
2002	97.96403
2003	96.2992
2004	95.74447
2005	97.31239
2006	96.10672
2007	99.31408
2008	98.78935
2009	99.34537
2010	98.16557
2011	100.46761
2012	100.92514
2013	100.59083
2014	100.84175
2015	98.19102
2016	98.5475
2017	98.71023