Year	% of relevant age group
1971	101.79852
1972	103.74963
1973	111.0326
1974	112.32508
1981	97.83209
1982	99.12903
1983	102.61255
1984	98.82929
1985	96.41223
1986	99.4423
1987	98.52188
1988	100.15064
1989	95.83261
1990	99.41839
1991	99.32864
1992	100.81014
1993	102.39185
1994	103.42896
1998	101.86334
1999	100.35806
2000	102.32585
2001	99.9043
2002	101.32381
2004	98.48902
2005	97.25429
2006	97.49565
2007	98.62369
2008	100.6097
2009	100.62463
2010	99.66134
2011	102.84777
2012	103.62941
2013	101.26053
2014	98.06092
2015	98.20433
2016	96.70122
2017	97.75549