Year	% of GDP
1968	9.721063849504215
1969	10.004063388866316
1970	8.69740828004039
1971	8.88088808880888
1972	8.433128710878535
1973	9.105254179460935
1974	11.51177495983867
1975	9.793843076239165
1976	8.963684676705048
1977	8.59802489590373
1978	9.380280500168976
1979	11.149705390266968
1980	10.47727508023605
1981	9.14260775263513
1982	7.879139753731524
1983	8.190356375940828
1984	6.908745903053304
1985	17.024212194780215
1986	15.942167676188223
1987	20.80640878787338
1988	26.243417837780246
1989	22.519689571391503
1990	21.73693139109904
1991	17.07977856888873
1992	16.40359548118174
1993	23.782508341995744
1994	23.99224087082656
1995	22.953746940659155
1996	23.147063749313578
1997	23.96708866563817
1998	24.08844628153142
1999	25.277166357409715
2000	25.9567882076529
2001	23.628785487402904
2002	22.482591663875546
2003	30.668824571074428
2004	30.831558838537877
2005	21.40922928666586
2006	21.68148585073006
2007	19.612441886240866
2008	18.4233597479383
2009	16.88689972010136
2010	14.931251466845897
2011	15.02969847892342
2012	14.960893626660205
2013	14.661588077141117
2014	14.92037304720943
2015	15.057719489172847
2016	15.42679389893441
2017	15.205121326968731
2018	15.581367787959962
2019	15.262525874683524
2020	9.873085083357669
2021	13.286974529331594
2022	15.275763635012881
2023	15.268648391470965