Year	% of GDP
1970	2.8228323316372834
1971	2.9183708247440983
1972	2.931278629593469
1973	3.8404755033270623
1974	2.9853798024948346
1975	3.2391344022944035
1976	2.6450223850353525
1977	3.895275248450618
1978	3.8573267104248874
1979	3.284931960629576
1980	3.141793515001058
1981	1.4315521561781945
1982	2.0547497841925755
1983	2.0215771705391465
1984	2.2351640472036762
1985	1.7699266836742211
1986	2.9899169300467565
1987	2.8887029865262974
1988	3.1050892929089264
1989	3.4614502571886794
1990	3.851978215302109
1991	3.693619045265839
1992	3.8170313661996813
1993	4.467702927710466
1994	5.395280084626995
1995	5.928402172775524
1996	4.977139046695851
1997	4.471555316500493
1998	4.5177397646178745
1999	3.4050522584107865
2000	3.43085799149645
2001	3.1311544152366864
2002	3.1507669013286077
2003	4.055245525609651
2004	2.7287478362337323
2005	2.458093375771217
2006	2.017026114838905
2007	2.374265320420385
2008	2.4369013711323273
2009	2.61891284630258
2010	2.0612054491478022
2011	2.067739777651188
2012	2.207185929253833
2013	2.0614864684593033
2014	2.099553031313678
2015	2.4874775748267033
2016	2.9180177797552007
2017	3.021310668273298
2018	2.076265036357325
2019	1.81466544278883
2020	2.033552997051606
2021	2.034952056174262