Year	% of GDP
1967	31.185567010309278
1968	12.579415501905972
1969	9.3
1970	13.764044943820226
1971	28.457234212629896
1972	29.829545454545453
1973	26.210153482880756
1974	30.624450307827615
1975	35.625522732052296
1976	36.32250367522334
1977	32.82636957896392
1978	29.688311707521216
1979	24.660728964715005
1980	22.47229078941
1981	22.72962059866707
1982	27.17865688745854
1990	12.348371875625988
1991	15.020179783525958
1992	16.353725015142338
1993	17.53476559247231
1994	15.742958951543093
1995	14.979932543196849
1996	13.695248795601177
1997	17.645126857705886
1998	31.0369940899292
1999	22.320496248976703
2000	15.45066134905862
2001	17.058370293817298
2002	18.64455861779413
2003	21.91687854844066
2004	24.369497774733862
2005	22.01588168272551
2006	23.86938051844879
2007	28.665481955055217
2008	30.61872808763922
2009	33.30616333523168
2010	21.666156462585036
2011	28.55277906422622
2012	27.652958906473625
2013	29.944130200923063
2014	29.827342408564984
2015	34.011359919112614
2016	39.298992626440956
2017	33.32164660623878
2018	30.491416552978627
2019	28.95340200948629
2020	31.57454108746998
2021	25.619344202090062