Year	% of GDP
1963	3.878099588228613
1964	4.47439832434559
1965	6.237121177522938
1966	6.557815311579746
1967	6.667337536540798
1968	6.800609382427698
1969	7.556971065233632
1970	8.037901402309974
1971	7.754333119268058
1972	7.139282049756294
1973	7.593596648826472
1977	9.871813395538183
1978	9.879049495427452
1979	8.996881556089896
1980	8.017569722203755
1981	9.210380511210547
1982	11.150031019875412
1983	11.047838726905933
1984	11.540276892264567
1985	10.387011063813967
1987	8.565454081374746
1988	8.061225735321628
1991	10.751881520981934
1992	8.590834631289386
1993	7.834841019475325
1994	7.388907372998593
1995	6.58635864366324
1996	6.010140515323787
1997	6.566794508452476
1998	7.470165801231665
1999	6.45588658643867
2000	6.357173964202149
2001	6.328276697181516
2002	5.81290335943537
2003	5.387565667273523
2004	5.021794465883183
2005	4.555601023254484
2006	4.30407933485383
2007	4.44503693691166
2008	4.129745786538513
2009	5.222358323129928
2010	4.971477636169827
2011	4.881372232509544
2012	4.9674814506682905
2013	5.726305005461884
2014	6.364938692136838
2015	7.463618949214094
2016	6.171630681624536
2017	6.416379164149182
2018	5.896440877851948
2019	5.412459491279087
2020	5.780886102240407
2021	5.101783829299761
2022	4.940872630939243