Year	% of GDP
1970	0.2109308050793366
1971	0.26854991016726576
1972	0.3005206319607329
1973	0.5192235101802698
1974	2.4819454606786295
1975	2.245965357240063
1976	2.5170354404320894
1977	2.362497417347957
1978	2.5575377315763625
1979	6.268231063167824
1980	7.267188304876981
1981	5.827910485219019
1982	5.014679204797903
1983	6.192082382759751
1984	5.933363209558754
1985	5.616347944314289
1986	2.6249245036936326
1987	4.053719134615836
1988	2.748310089200228
1989	2.528374443755859
1990	3.2027395614878182
1991	1.6740772130411437
1992	1.6960215076343106
1993	1.4213099439429482
1994	1.1888920736191022
1995	1.3235200895899943
1996	1.6280331653617466
1997	1.3829219298956978
1998	0.772424972089621
1999	1.498702043254755
2000	2.4686435797446116
2001	1.898166630372333
2002	2.3175449185493955
2003	2.590635741653948
2004	3.0042790849819117
2005	3.7935829987176968
2006	3.9596566324779365
2007	3.4132480144401196
2008	3.968503091076755
2009	2.109980320443112
2010	2.4416421508728945
2011	3.3684871919916106
2012	3.249060301883264
2013	2.891308136629071
2014	2.6688852091883084
2015	1.1840995937010814
2016	0.9168481846179567
2017	1.1943301314559318
2018	1.9082852594974782
2019	1.5792870245271589
2020	0.8829632371078517
2021	2.1345050192972708