Year	% of GDP
1974	1.4641176205690158
1975	1.0384210306414712
1976	1.575805136437252
1977	1.1017234045807114
1978	0.6684725188428775
1979	0.7117404221219908
1980	0.6212437631993164
1981	0.4594701009129901
1982	0.6932357669225954
1983	0.5257807351244416
1984	0.40744098814669094
1985	0.3358742875569368
1986	0.31221358322237414
1987	0.36247235963318053
1988	0.07407295929624998
1989	0.4465266815582505
1990	0.8003429449399395
1991	1.1405582361227085
1992	0.9666716835441794
1993	0.8188505912192267
1994	0.8794015142217266
1995	0.8579637633844087
1996	0.9024037090642124
1997	0.783183075436667
1998	0.8335754713357485
1999	0.7437303055800245
2000	0.9869286617099772
2001	1.3099480232649043
2002	1.333019912542315
2003	1.4186668293346383
2004	1.025336832898157
2005	0.8209908675447553
2006	0.6865291172094738
2007	0.6537249056704133
2008	0.6761545086077041
2009	0.6315428501663922
2010	0.37102879393065563
2011	0.3168950679579169
2012	0.593504086042103
2013	0.5452974675287735
2014	0.6509566054896441
2015	0.3346940528651983
2016	0.4966788175106627