Year	% of GDP
1968	15.615133609190979
1969	15.015773591445972
1970	15.52251895343441
1971	14.751924828620503
1972	14.610974186238469
1973	12.461208676410324
1974	7.75201183264014
1975	7.983635587946081
1976	7.391336466097476
1977	7.003625877271223
1978	7.35246410734014
1979	5.646412611662976
1980	4.784642356328281
1981	5.182453235487861
1982	6.084349578108781
1983	6.805034149425931
1984	7.453210723114978
1985	8.054357029047967
1986	9.431092657549984
1987	9.664942428366645
1988	10.590423501453694
1989	11.229618192355893
1990	10.516246637391928
1991	12.260712142209282
1992	8.895670821067041
1993	9.045127700997227
1994	9.993506634676445
1995	9.27616397631178
1996	8.985420350880167
1997	8.498149404012288
1998	9.386470730490014
1999	8.442774365688303
2000	7.370213731882977
2001	7.829655712180607
2002	7.851434990069908
2003	7.48381241779693
2004	6.6417160780105995
2005	5.8478209628625555
2006	5.620284461818496
2007	5.626210014137019
2008	5.106333064126666
2009	6.171815738201239
2010	5.707618994150256
2011	5.14866190734037
2012	4.676232976648828
2013	4.799155641350396
2014	5.018485424526667
2015	5.673781830008563
2016	5.48135296399882
2017	5.031266747751231
2018	4.695450025478425
2019	4.88714915949799
2020	5.622715407424099
2021	4.9269078910139585
2022	4.217733704678718
2023	4.652208548256178