Year	% of relevant age group
1971	101.39146
1972	104.03236
1973	104.43408
1974	103.54121
1975	101.10375
1976	100.89786
1977	101.24507
1978	97.26421
1979	99.9237
1980	100.24923
1981	98.12323
1982	98.25092
1984	94.4947
1985	94.27259
1986	99.42353
1987	102.0255
1988	102.54731
1989	102.29141
1990	101.97089
1991	98.39672
1992	97.89652
1993	97.22453
1994	97.50701
1998	102.00501
1999	100.18319
2000	97.94835
2001	97.79154
2002	98.02763
2003	99.84896
2004	98.59319
2005	96.88133
2006	99.27738
2007	100.3055
2008	97.82284
2009	97.3131
2010	100.42284
2011	101.75427
2012	100.95406
2013	102.3461
2014	99.88212
2015	100.78194
2016	101.40439
2017	100.22682