Year	% of GDP
2003	0.797720015048981
2004	1.01874005794525
2005	0.924430012702942
2006	1.22991001605988
2007	1.1452100276947
2011	0.314850002527237
2013	0.374309986829758
2014	0.363200008869171
2015	0.374000012874603
2016	0.324539989233017
2017	0.348980009555817
2018	0.503740012645721
2019	0.36327999830246