Year	% of GDP
1960	9.992200814223443
1961	9.67888794540867
1962	9.805973484967204
1963	10.045565423288501
1964	9.778848131320004
1965	10.404013874840425
1966	10.379490620657027
1967	10.291804242053349
1968	10.061096169665158
1969	9.820475868459535
1970	9.216950239354793
1971	9.837601953769806
1972	10.357856465306687
1973	11.227884523232401
1974	9.814743182635837
1975	12.735450877610992
1976	13.483043390084356
1977	15.61836290474934
1978	17.80510736096711
1979	15.990790086093838
1980	15.682306751465173
1981	12.593450986125786
1982	13.485010167660821
1983	16.042764813738124
1984	14.80424433000184
1985	14.449428262598495
1986	17.803601040394028
1991	12.614724582861344
1992	11.660424041998747
1993	10.793376593965993
1994	10.597563303643213
1995	10.851086856887848
1996	10.367931675654427
1997	11.581759549051268
1998	12.838295033201039
1999	15.878753598568514
2000	14.449511426541617
2001	14.692667367512525
2002	14.642940346885256
2003	14.361857889380273
2004	13.054087901802912
2005	13.676833369110918
2006	15.532329780329542
2007	20.120277707606792
2008	22.975335399975783
2009	22.93079466107323
2010	19.464328785356283
2011	18.86717425906458
2012	19.421442172834144
2013	21.328569390531413
2014	24.7509799215916
2015	19.54540935550586
2016	20.7285122020727
2017	19.4748520988299
2018	13.831061231029288
2019	13.643218937421373
2020	15.222642240198569
2021	13.742914104653318