Year	% of GDP
1970	7.499483872063352
1971	7.124173635483267
1972	6.773668714639989
1973	5.395470267869903
1974	9.200624814096257
1975	6.311442420128704
1976	6.577883279452375
1977	7.098774061120654
1978	6.359365552911643
1979	4.746782381135207
1980	3.921238812645359
1981	3.3915742640399094
1982	2.9102192880000004
1983	1.9963079076982366
1984	2.783486072302382
1985	2.470315527566664
1986	2.123574021424611
1987	1.3457787077802117
1988	1.138948827180608
1989	1.3428059125390925
1990	1.227764997472766
1991	1.3237827112127156
1992	1.1433830220895083
1993	1.2817750367346066
1994	1.4661731255351376
1995	1.0860335638090872
1996	1.2409617804974127
1997	0.7521371582264506
1998	0.41517140294253607
1999	0.36702714508577744
2000	0.43126127954080173
2001	0.3011637897228219
2002	0.2225001581605448
2003	0.32309057741895525
2004	0.5836968456187063
2005	0.8817461529525248
2006	0.8601585233379242
2007	1.0910186539389717
2008	1.1302526510557283
2009	1.4764272083954002
2010	3.0974735100796296
2011	4.367990650687847
2012	4.519021108947877
2013	2.950452135803999
2014	1.4599263820104247
2015	0.6307539403445098
2016	2.4697905113200327
2017	2.513966962797029
2018	0.30113679744485583
2019	0.33304234434693425
2020	0.46302444950387117
2021	2.054401641086521