Year	% of GDP
1967	11.1624434480403
1968	7.63167698106905
1969	11.080278615988
1970	11.8048478545021
1971	12.7152517063813
1972	13.8318345588419
1973	17.2239511479525
1974	26.3122788618428
1975	28.6889433995633
1976	27.3122013443265
1977	20.6822547648714
1978	23.8411075557078
1979	22.4203774946808
1980	22.0533667251186
1981	20.8956652148998
1982	21.6740450632627
1983	20.5530743538227
1984	13.1041457804126
1985	13.3574036084362
1986	15.5622301269069
1987	15.2161808783011
1988	10.9006668289974
1989	12.1148940100649
1990	11.5589602648574
1991	11.2393773910263
1992	12.3549221811439
1993	11.9421315187578
1994	7.51924803601488
1995	9.75546920377251
1996	12.176590410959
1997	12.7310189618786
1998	14.7948992620369
1999	13.774355751278
2000	13.5266022815276
2001	13.4979704077741
2002	14.6595406916384
2003	14.8819991744876
2004	17.0070365791205
2005	14.8439662561081
2006	15.4988438155855
2007	16.2426716114078
2008	11.9403213357788
2009	16.4723066101104
2010	18.0082680522546
2011	18.4114465730697
2012	19.5580493323313
2013	20.9077260636923
2014	22.069509936851
2015	24.9916366302881
2016	26.4264165830576
2017	25.948223942032
2018	25.5898046855311
2019	24.5003590844329
2020	25.986728304283
2021	28.2828504458138
2022	29.7060719351386
2023	27.5335622577722