Year	% of GDP
1980	2.5749520490668694
1981	2.446625930831028
1982	2.207759177213028
1984	1.3690619839698313
1985	1.1532041369461539
1986	1.9028800415757035
1989	-0.18876913200703072
1990	-3.3569514147892723
1991	-1.4655338375231977
1992	-1.086086910344591
1993	-1.508246801368659
1994	-0.966344828074845
1997	0.28786017191790925
1998	0.5358423075702247
1999	0.495137310196617
2000	0.42213211105711035
2003	0.4985661923263828
2008	1.1646984516808299
2009	1.2953182640388732
2010	0.9461308036759128
2011	0.795337914740378
2012	0.49912072575032734
2013	0.7992908811023286
2014	0.8440854575543415
2015	0.6596605944035191
2016	0.41280150919096165