Year	% of GDP
1999	4.754000638036229
2001	2.343433163693789
2002	1.9992364802579463
2003	4.474560027804838
2004	1.636363502619782
2005	2.29608380828449
2006	2.9039373550397207
2008	4.372149422639299
2009	3.468792875668492
2010	3.7705258674451585
2011	3.1911907861450968
2012	2.7469744677678416
2013	3.9160828241573413
2014	4.201255918687898
2015	2.7176963586692944
2016	2.2093918727098623