Year	% of GDP
1998	2.2538172182460205
1999	1.996603913509751
2000	1.6835019677210583
2003	0.6615705127687308
2008	3.7964572745166416
2009	4.378758867086421
2010	1.5158263794434463
2011	1.095511475340981
2012	-2.1066162815994462
2013	1.936256061885497
2014	1.7329615953797557
2015	1.421529231059836
2016	-0.4929270491324206