Year	% of GDP
1980	20.778690578561495
1981	19.668560606060606
1982	18.10670019759296
1983	17.763962724219688
1984	14.122167333176508
1985	15.063810391978121
1986	11.780803174385989
1987	13.397488397488397
1988	9.517510707986897
1989	8.795636269943378
1990	9.247474747474747
1991	10.435847208619
1992	8.470823202500869
1993	11.956392467789891
1994	9.41229284351502
1995	10.227723844238334
1996	13.574584895554365
1997	15.475874867444325
1998	23.428223473892526
1999	17.896751527227917
2000	12.507348207037483
2001	11.66400850611377
2002	14.676244637334133
2003	17.497477758415116
2004	15.143508555112826
2005	16.581349206349206
2006	13.924930056142854
2007	11.196485358725024
2008	18.29595796642128
2009	12.167620108624732
2010	12.998722652657015
2011	14.933910722723715
2012	11.453680187846544
2013	21.09197785920365
2014	12.732582902183262
2015	13.469610497043593
2016	12.596711155486274
2017	12.30100274455787
2018	12.79166463099837
2019	9.987196799689633
2020	8.428398464691336