Year	% of GDP
1971	0.11404722971051591
1972	0.4105103211418569
1973	0.6372614725469319
1974	7.835169386294824
1975	5.597458666047573
1976	5.808065508086741
1977	6.650713403583427
1978	4.996416681737353
1979	12.967943752705073
1980	7.577874529468464
1981	2.2639104729917103
1982	0.9187323201077113
1983	2.1859509309492737
1984	3.2464374605873494
1985	4.188971264056514
1986	1.3547645506294763
1987	2.4023836430666106
1988	1.8614995093866509
1989	4.002858461429
1990	4.661232037612029
1991	2.909453192455224
1992	3.4889882407596224
1993	5.963025980097306
1994	5.27385013556441
1995	6.034310113345998
1996	7.162471645366291
1997	6.532959615368065
1998	3.4110968910880555
1999	3.0043492697059317
2000	6.938989956945579
2001	5.112279836615575
2002	4.881671873177546
2003	4.296104616290338
2004	5.53701627793804
2005	8.427474295681263
2006	8.678007311013724
2007	8.941728901203797
2008	11.808889159644032
2009	5.793938994294413
2010	7.77452780502875
2011	9.713284696873828
2012	8.306703996563199
2013	6.822811572168105
2014	5.197371045979744
2015	2.07708781755698
2016	1.8685929699139285
2017	3.1860124360472764
2018	4.390161519051742
2019	3.8021898155857685
2020	1.9483317223421073
2021	3.4527552661178023