Year	% of GDP
1970	1.0141292446927976
1971	1.2344509896898688
1972	1.2214872712327831
1973	1.883634563490545
1974	7.737562902483439
1975	6.063095220008801
1976	6.1233981573531
1977	4.982549425278606
1978	4.897803414499118
1979	11.277254131969885
1980	11.033697046904853
1981	8.257194034904995
1982	6.208168783652285
1983	7.612763239998341
1984	7.394701501902618
1985	6.930323826258817
1986	3.2744135952374678
1987	5.164510846168966
1988	3.5094814806454866
1989	3.349154734227318
1990	4.380672106202302
1991	2.3272244294347297
1992	2.3145141684466566
1993	1.9517113773381132
1994	1.6529806133988747
1995	1.8453711300965177
1996	2.3318472599256084
1997	1.9651504520025955
1998	1.067494321175465
1999	2.005753286630121
2000	3.3167937107032954
2001	2.5743016537330012
2002	3.0459908788575674
2003	3.3038418322687133
2004	3.889491305054231
2005	4.939240202437439
2006	5.097563491537937
2007	4.3673344072523905
2008	5.133696086659804
2009	2.6446078863086546
2010	3.0343012965129113
2011	4.270789550495326
2012	4.021487698858388
2013	3.579769817199755
2014	3.2043827703707937
2015	1.1160292782835135
2016	0.8613603100715249
2017	1.1222380059469226
2018	1.7792039081540805
2019	1.4766811088899832
2020	0.8350319509417311
2021	1.9796108052121175