Year	% of GDP
2003	3.886758062003427
2004	4.726375381042241
2005	2.2805079198848017
2006	1.2396505813379168
2007	5.729075381082588
2008	1.2888070195405388
2009	0.8217329321581113
2010	0.6461373284912678
2011	0.4783672417100971
2012	0.6218176088732451
2013	0.9671239043274049
2014	0.8972298425371591
2015	0.8725189784783556