Year	% of relevant age group
1970	102.0918
1971	103.1445
1972	103.6776
1973	105.2208
1974	105.0542
1975	106.203
1976	106.1293
1977	107.0252
1978	105.4052
1979	107.8274
1980	106.8636
1981	106.2838
1982	105.4845
1983	108.4407
1984	109.0057
1985	109.3883
1986	108.9785
1987	107.5247
1988	107.3009
1989	105.5984
1990	107.4264
1991	104.0406
1992	103.9348
1993	104.1283
1994	104.2563
1995	103.6938
1996	103.1184
1997	102.7723
1998	104.0054
1999	104.532
2000	105.2163
2001	106.1081
2002	107.7827
2003	114.1258
2004	111.9499
2005	110.9697
2006	109.972
2007	111.0389
2008	111.0865
2009	106.7097
2010	108.3067
2011	106.1934
2012	105.1293
2013	104.2628
2014	102.1826
2015	102.0472
2016	103.0572
2017	100.9691
2018	101.3685