Year	% of GDP
1990	0
1995	-0.05366150323757737
1996	0.226027397260274
1997	-0.003163956210846042
1998	1.073339910903818
1999	0.7458156274390773
2009	6.580931754588424
2010	5.087697704474121
2011	5.052753791451999
2012	1.641906521550853
2013	1.01671037214752
2014	0.731359210350807
2015	1.3369923547208657
2016	3.647602913572668