Year	% of GDP
1971	0.11404722971051591
1972	0.41051032114185676
1973	0.6372614725469319
1974	7.835169386294827
1975	5.597458666047573
1976	5.808065508086741
1977	6.650713403583427
1978	4.996416681737354
1979	12.967943752705072
1980	7.582817347113023
1981	2.2649667758298544
1982	0.9191844991925922
1983	2.187165995761054
1984	3.2485565124441145
1985	4.192301250688176
1986	1.3560402836814234
1987	2.4047572676712523
1988	1.863440703111978
1989	4.007279529717309
1990	4.6664634965457665
1991	2.9125110965897454
1992	3.493564423999413
1993	5.971308063900362
1994	5.281205527031056
1995	6.041212816956912
1996	7.169747255320128
1997	6.540009186642729
1998	3.415071981153755
1999	3.009434994741995
2000	6.949907451932361
2001	5.120803997962858
2002	4.890056245878507
2003	4.302034192310228
2004	5.544281550115732
2005	8.437613007521175
2006	8.68778962567858
2007	8.950398166306751
2008	11.817965292892119
2009	5.797979247445139
2010	7.779811247731843
2011	9.719619322128136
2012	8.312082017430402
2013	6.827883885539308
2014	5.201226891547572
2015	2.0788759789091777
2016	1.8705287373671233
2017	3.1893115936086196
2018	4.394579296873688
2019	3.8060908920682235
2020	1.9499094002474846
2021	3.4554248048643776