Year	% of relevant age group
1970	44.4958992004395
1971	50.2021713256836
1972	57.1165008544922
1973	60.2304000854492
1974	62.8784217834473
1975	58.9654502868652
1976	51.7351913452148
1977	47.0425300598145
1978	53.7828712463379
1979	66.7304229736328
1980	71.6522827148438
1981	81.6772079467773
1982	85.3366394042969
1983	77.7190017700195
1984	80.8004913330078
1985	86.9321975708008
1986	96.7140884399414
1987	97.8645095825195
1988	93.3816680908203
1989	89.4928207397461
1990	90.6565704345703
1991	90.9483184814453
1992	91.2317810058594
1993	90.030647277832
1994	93.9578475952148
1995	90.7589721679688
1996	92.6652297973633
1998	91.2708282470703
1999	88.1155319213867
2000	87.9329528808594
2001	90.7007675170898
2002	92.4310531616211
2003	92.7147903442383
2004	92.6690292358398
2005	91.5581970214844
2006	94.1542816162109
2007	90.6586074829102
2008	93.4133224487305
2009	96.555419921875
2012	96.5031509399414
2013	95.2251205444336