Year	% of relevant age group
1971	101.64413
1972	103.19904
1973	110.84122
1974	112.74732
1975	102.37778
1976	94.49931
1977	91.90195
1978	93.3666
1979	99.27388
1980	102.61978
1981	97.84572
1982	99.29233
1983	103.02668
1984	98.16054
1985	96.6444
1986	99.41446
1987	98.83032
1988	100.57387
1989	96.29366
1990	98.8792
1991	99.14543
1992	100.25361
1993	102.35091
1994	103.21833
1998	102.24977
1999	100.67578
2000	102.19049
2001	99.9033
2002	101.45166
2004	98.64649
2005	97.16831
2006	97.87598
2007	98.97195
2008	101.15351
2009	100.5034
2010	99.20923
2011	101.6745
2012	102.64688
2013	101.00407
2014	98.18468
2015	97.60764
2016	96.7832
2017	98.28929