Year	% of GDP
1998	6.197163282348926
1999	6.386617223646695
2009	6.469484382452355
2010	5.862474675466478
2011	3.856210160524594
2012	6.8944069951648785
2013	7.684016393875849
2014	7.982317862097872
2015	8.194438004910078
2016	7.39027026174951