Year	% of relevant age group
1970	67.61737
1971	66.98016
1972	76.14317
1973	78.85305
1977	108.11533
1978	101.93206
1980	134.68466
1981	119.50906
1998	97.25798
1999	95.02571
2004	105.69607
2005	97.73954
2014	94.67114
2015	93.21079
2016	92.29409