Year	% of lower secondary school age
1978	32.6416282653809
1980	28.840259552002
1991	23.0624408721924
1992	19.9991493225098
1993	15.425760269165
1994	6.56472015380859
1995	10.4106903076172
1997	23.7337799072266
1998	28.0283203125