Year	% of relevant age group
1971	103.1713
1972	104.7368
1973	107.3299
1974	109.1512
1975	109.2334
1976	110.004
1977	108.2842
1978	106.0234
1979	104.2993
1980	103.8294
1981	105.5382
1982	105.4167
1983	105.6334
1984	104.4935
1985	106.7072
1986	104.0543
1987	103.2462
1988	103.0048
1989	101.465
1990	101.6989
1991	103.3884
1992	102.5555
1993	102.0594
1994	103.7337
1995	103.9662
1996	106.025
1997	105.6099
1998	105.5017
1999	105.5643
2000	112.6807
2001	108.7812
2002	106.6423
2003	105.9624
2004	105.2534
2005	103.1766
2006	105.8885
2007	104.3039
2008	104.0114
2009	103.1295
2010	105.9642
2011	105.0905
2012	104.3694
2013	103.8812
2014	104.5645
2015	104.4978
2016	103.511
2017	102.3619
2018	102.6577