Year	% of relevant age group
1970	80.5673
1971	81.40792
1972	84.41925
1973	86.37537
1974	88.6912
1975	90.69923
1976	91.59555
1977	93.79383
1978	91.18686
1979	93.19159
1980	94.4649
1981	96.52564
1982	98.07445
1983	102.5958
1984	102.1945
1985	102.238
1986	101.7074
1987	97.97531
1988	98.3797
1989	98.55452
1990	98.83151
1991	99.70586
1992	100.3857
1993	101.8056
1994	102.3441
1995	101.9766
1996	103.355
1997	103.962
1998	104.9557
1999	104.6861
2000	106.0384
2001	106.3599
2002	105.1448
2003	113.5976
2004	113.2038
2005	113.2063
2006	113.2815
2007	112.55
2008	111.9026
2009	107.4396
2010	109.7798
2011	106.7274
2012	105.4123
2013	104.1071
2014	102.1991
2015	102.5628
2016	103.1498
2017	100.6532
2018	101.1386