Year % of relevant age group 1971 17.7058200836182 1972 20.6444301605225 1973 25.9776706695557 1974 30.1984596252441 1975 34.2663307189941 1976 38.1095008850098 1977 47.9302406311035 1978 51.7607116699219 1979 56.9384803771973 1981 57.3528709411621 1982 54.2881889343262 1983 43.101978302002 1984 47.4383087158203 1987 44.1259117126465 1989 34.196720123291 1993 39.1254386901855 1994 28.0679092407227 1996 29.3946704864502 2000 31.6459903717041 2001 38.780460357666 2002 26.8889808654785 2003 32.7593688964844 2004 46.6306915283203 2008 41.3013114929199 2009 45.2833213806152 2010 45.4021110534668 2011 45.2800598144531 2012 49.1010589599609 2015 98.1790008544922 2018 62.7569999694824