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