Year	% of GDP
1970	6.75179243610598
1971	5.38352192015516
1972	6.30829520929673
1973	8.72371082180461
1974	8.45226242159075
1975	9.70803078860406
1976	7.98212115832308
1977	12.4308443873245
1978	11.5680089110372
1979	8.29405641951386
1980	8.89358459383809
1981	7.57597226766758
1982	10.8133842710682
1983	6.53842092611096
1984	6.76347528128349
1985	5.92949728006308
1986	8.56691139845142
1987	9.31221432388068
1988	10.3767161515345
1989	10.6504132444121
1990	13.3692809588261
1991	12.6858453904981
1992	14.0206683948811
1993	14.2386485803442
1994	17.0617153405694
1995	23.7493220059671
1996	28.0156028826039
1997	23.6215639518173
1998	27.019238377295
1999	15.4172437381217
2000	15.0609351884312
2001	18.7164186924751
2002	24.149520208517
2003	40.408299604519
2004	30.3511612276012
2005	26.5497870891534
2006	23.6279344225975
2007	32.0112249662978
2008	32.6579273976076
2009	30.0655695330826
2010	23.6639205247196
2011	24.6045714566291
2012	17.1161258674102
2013	17.5157633422963
2014	17.1932826745191
2015	15.3915619692032
2016	18.9376098538483
2017	18.237439690951
2018	13.4317629933204
2019	13.1274376353104
2020	13.8475521568267
2021	13.9570339894077