Year	% of relevant age group
1971	14.0953
1972	16.02412
1973	16.25486
1974	16.42973
1975	16.01166
1976	16.42017
1977	16.14474
1978	17.99596
1979	18.29657
1980	19.90981
1981	22.052
1982	23.24758
1983	25.92851
1984	26.23485
1985	32.19146
1987	32.20045
1988	29.20274
1989	32.94467
1990	33.47222
1991	33.6989
1992	32.01957
1993	36.58282
1994	35.10693
1995	45.81087
1996	45.73246
1999	46.20916
2000	46.93492
2001	49.21614
2002	51.04803
2003	57.19621
2004	70.91619
2005	74.79348
2006	75.46594
2007	82.89318
2008	89.95085
2009	84.6123
2010	90.17976
2011	90.66561
2012	92.93752
2013	95.60018
2014	100.59685
2015	105.40329
2016	106.54462
2017	108.95436
2018	111.09734