Year	% of relevant age group
1972	78.31013
1973	77.76692
1974	86.98673
1975	89.22548
1976	91.47411
1977	91.94603
1978	96.76226
1979	100.598
1980	98.51091
1981	100.7802
1982	99.60789
1983	97.69436
1984	95.77882
1985	95.19438
1986	91.69507
1987	88.3867
1988	90.43262
1989	88.42421
1990	88.97903
1991	86.92398
1992	87.38902
1993	89.60479
1994	88.6513
1995	92.79868
1996	93.78677
1997	102.6829
1998	99.78195
1999	95.72402
2000	106.1462
2001	113.3634
2002	117.2353
2003	117.1104
2004	115.4742
2005	113.0835
2006	113.6753
2007	113.9364
2008	113.6894
2009	113.2968
2010	111.8341
2011	113.595
2012	113.788
2013	114.5222
2014	116.0296
2015	116.6656
2016	116.9486
2017	116.2949
2018	114.6291