Year	% of tax revenue
1990	2.447257383966245
1991	2.2271714922048997
1992	2.451333813987022
1993	1.3831258644536653
1994	0.5825242718446602
1995	0.3048780487804878
1996	0.5599104143337066
1997	0.15535991714137753
1998	0.6086142322097379