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	35.85887142372498
1977	30.618902553981563
1978	28.895918764298074
1979	26.010073671965877
1980	22.29321426842844
1981	22.95696873302083
1982	26.596155185247365
1983	26.48271931394282
1984	29.97144310610785
1985	27.57892379926861
1986	32.11209092783033
1987	18.788706758630443
1988	15.850525662893473
1989	12.326559551559551
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	34.05344558842682
1999	21.82043986675148
2000	15.370997220161463
2001	17.212411566856133
2002	19.004552124221988
2003	23.201311520690968
2004	27.901194326914595
2005	21.426208451495434
2006	27.151475443114503
2007	34.07314528190152
2008	36.478269106395764
2009	28.207792523579457
2010	20.03714925970388
2011	27.661773687990387
2012	30.210034901677247
2013	32.356479392950924
2014	28.62176933349793
2015	36.37156649914255
2016	36.08647488489632
2017	33.84336783598268
2018	31.674994315598
2019	26.86514852596325
2020	27.62071150771712
2021	22.408866674068847