Year	% of relevant age group
1972	114.6699
1973	108.94589
1974	110.83412
1975	107.94097
1976	107.53424
1977	106.35681
1978	103.35297
1979	104.71703
1980	101.88632
1981	90.3928
1982	91.29063
1983	91.30309
1984	94.97429
1985	100.20367
1987	99.28449
1988	99.80063
1989	94.92604
1990	90.93041
1991	91.66529
1992	91.99724
1993	94.24901
1994	94.00789
1996	95.4238
1998	94.23506
1999	94.96091
2000	97.66065
2002	100.28677
2003	98.44172
2004	93.26276
2005	91.22523
2006	89.17812
2007	87.4943
2008	87.53672
2010	82.89014
2011	79.39283
2012	76.50667
2013	74.82832
2016	79.80194
2017	84.78668
2018	80.96908