Year	% of relevant age group
1973	104.7475
1974	102.8268
1975	104.2748
1976	106.1895
1977	106.106
1978	105.899
1979	106.0011
1980	105.7663
1981	105.0275
1982	105.362
1983	105.7362
1984	105.4321
1985	103.7886
1986	104.9388
1987	106.8464
1988	107.0096
1989	106.0108
1990	105.8231
1991	104.5464
1992	103.0912
1993	104.801
1994	101.0309
1995	103.0437
1996	106.7732
1997	106.4251
1998	103.1729
1999	104.0169
2000	103.4602
2001	102.3985
2002	101.4325
2003	101.8725
2004	102.9715
2005	103.5309
2006	104.0312
2007	104.1923
2008	103.9267
2009	101.9899
2010	102.4574
2011	100.7713
2012	101.8168
2013	100.5683
2014	100.7703
2015	101.061
2016	100.455
2017	98.18123
2018	98.89994