Year	% of GDP
2003	1.7502664859839878
2004	2.101141836042219
2005	1.8487152215919926
2006	1.809556226683449
2007	1.8110428813043145
2008	1.9758013264742944
2009	1.8860124353729104
2010	1.9817676584047916
2011	1.6298361598689062
2012	3.3032683224693646
2013	4.390375488416376
2014	4.079349181374661
2015	2.178189923369937
2016	2.5958360141704637