Year	% of GDP
1998	2.4199322318396024
1999	1.434306756608379
2000	1.5308536852542591
2001	1.9263126623972762
2002	3.323544498537739
2003	2.9568346984884095
2004	2.6499454356780974
2005	3.550142876581848
2006	2.405641538785579
2007	1.8957485267535674
2008	1.7251453697665355
2009	1.6242823103782493
2010	1.4950194927124576
2011	2.049254306988145
2012	1.2092481107632744
2013	2.270478414766795
2014	2.3795616296655626
2015	1.8178862397944555
2016	1.3154634622674226