Year	% of GDP
2001	2.47859144083013
2002	4.09130788353815
2003	12.0234398235396
2004	18.5127148484947
2005	3.94976330233428
2006	19.8654539366866
2007	22.7836174444275
2008	12.0746071846236
2009	26.5931777629137
2010	38.4447530598531
2011	40.3707520657316
2012	36.3855725195826
2013	30.1603927079286
2014	25.6202644678698
2015	23.6186617006971
2016	22.3340080317715
2017	24.1799983380229
2018	25.4248308525715