Year	% of relevant age group
1970	111.9946
1971	112.6713
1972	114.9845
1973	117.6206
1974	116.2598
1975	119.0055
1976	120.7312
1977	121.4717
1978	118.7183
1979	119.6187
1980	119.5468
1981	121.8802
1982	120.526
1983	125.6573
1984	127.8456
1985	125.8243
1986	124.8732
1987	117.4612
1988	117.6692
1989	116.5372
1990	116.2419
1991	116.312
1992	116.2818
1993	116.4548
1994	116.016
1995	116.6514
1996	118.2265
1997	118.3477
1998	118.7956
1999	119.3756
2000	119.3398
2001	118.396
2002	117.4368
2003	117.2946
2004	118.5117
2005	121.1289
2006	120.9688
2007	120.5056
2008	119.5848
2009	112.9134
2010	115.1207
2011	112.7967
2012	110.5128
2013	109.395
2014	107.7526
2015	108.062
2016	108.3225
2017	106.5206
2018	107.8007