Year	% of tax revenue
1982	0.522875816993464
1983	0.8571428571428572
1984	1.948051948051948
1985	1.545253863134658
1986	0.7580174927113703
1988	0.7206443408223824
1993	0.3578617758890628
1994	1.6093781045102327
1995	1.7543859649122806
1996	1.3503909026297085
1997	2.6240073656347103
1998	1.4814785099366972
1999	1.5642281561068099
2000	0.47544383187496836
2001	0.6886118211695967
2002	0.5091551850667692
2003	0.02811804419286841
2004	0.020068691329221774
2005	0.02886407905174533
2006	0.009228954852170656
2007	0.00032267840283870946
2008	0.00225732752389837