Year	% of GDP
1988	15.327055044342067
1989	14.958868676132543
1990	13.522658110461538
1991	13.856494115189847
1992	21.4313882585368
1993	17.613208367529882
1994	20.60105400874548
1995	10.064888780589532
1996	7.2053679559728465
1997	6.846791484514703
1998	6.146699754110939
1999	7.3413175345497645
2000	8.582490073398093
2001	10.851572707494562
2002	8.075331064578814
2003	8.312338991431353
2004	8.325048599871144
2005	8.612624617059248
2006	7.574501022041735
2007	8.901847920534664