Year	% of GDP
1993	4.922304196140016
1994	7.453540924566659
1995	7.876802091966388
1996	13.586126075201944
1997	20.492176906915095
1998	28.625772408733685
1999	36.117711823495284
2000	36.82135664476054
2001	20.206321498065993
2004	28.61895905168899