Year	% of GDP
1977	20.806308958787163
1978	24.406608816641608
1979	22.56310250431479
1980	21.314321993388877
1981	22.120247797287124
1982	22.056928673309105
1983	28.03386645472829
1984	27.64762943914942
1985	22.855612830333218
1986	20.259395626822165
1987	25.9905145631068
1988	27.365842486085352
1989	26.357651782762698
1990	31.684120354906053
1991	34.92790115555556
1992	35.47563055355859
1993	31.625027835051544
1994	23.926628114285712
1995	22.243441960784313
1996	18.751829816913688
1997	17.736939827002644
1998	18.959359777313846
1999	18.89514421326398
2000	17.583873419582478
2001	18.610671034290494
2002	18.40798759567168
2003	18.648095808383232
2004	21.112219245827323
2005	21.842292107706594
2006	22.97673627974745
2007	23.55529820085929
2008	23.62350083752094
2009	16.83984206486279
2010	17.95038894414056
2011	16.86871825541536
2012	12.878211022869767
2013	13.683221619006666
2014	11.884960798122066
2015	9.59346470804861
2016	9.710041522108217
2017	12.476527694958833
2018	16.08277810638207
2019	17.172424731951395
2020	13.453391834346457
2021	10.854025738770243
2022	12.754077143767931