Year	% of GDP
1971	0.11404722971051591
1972	0.4105103211418568
1973	0.6372614725469319
1974	7.835169386294827
1975	5.597458666047573
1976	5.808065508086742
1977	6.650713403583426
1978	4.996416681737353
1979	12.967943752705072
1980	7.577874529468463
1981	2.2639104729917108
1982	0.9187323201077114
1983	2.1859509309492733
1984	3.246437460587349
1985	4.188971264056514
1986	1.354764550629476
1987	2.4023836430666106
1988	1.8614995093866509
1989	4.002858461428999
1990	4.661232037612029
1991	2.909453192455224
1992	3.488988240759623
1993	5.963025980097305
1994	5.27385013556441
1995	6.034310113345999
1996	7.16247164536629
1997	6.532959615368065
1998	3.411096891088055
1999	3.0043492697059304
2000	6.938989956945578
2001	5.112279836615577
2002	4.881671873177546
2003	4.296104616290336
2004	5.537016277938042
2005	8.427474295681263
2006	8.678007311013724
2007	8.941728901203794
2008	11.808889159644028
2009	5.793938994294413
2010	7.774527805028749
2011	9.713284696873826
2012	8.306703996563199
2013	6.822811572168106
2014	5.197371045979743
2015	2.0770878175569796
2016	1.8685929699139288
2017	3.186012436047276
2018	4.390161519051744
2019	3.8021898155857676
2020	1.948331722342107
2021	3.4527552661178027