Year	% of GDP
1960	12.884922276730304
1963	13.4127528282482
1964	13.849445633145303
1965	13.604025681068887
1966	13.530988803027913
1967	14.351629065587229
1968	15.171119060303932
1969	15.064900127782636
1970	15.929449619639701
1971	16.182616703265566
1972	16.440455687402235
1973	17.583971209870903
1974	17.250936914428483
1975	19.685788517131602
1976	17.98385478224026
1977	17.444429870142976
1978	16.725481415136585
1979	16.12
1980	15.804822632151344
1981	15.699718595862294
1982	14.433137280633732
1983	14.85651111908593
1984	15.068936365628883
1985	15.107544900735368
1986	14.698786422103382
1987	14.309617161551333
1988	13.940452819319482
1989	14.127238896069768
1990	14.478864618613061
1991	14.373263370050966
1992	13.875657911264746
1993	13.778606710236177
1994	13.497896102934117
1995	13.942255847147855
1996	14.321202950938156
1997	14.345865908050504
1998	13.125110933617323
1999	12.975398074030531
2000	11.71667601269331
2001	11.157622485131863
2002	11.66672111806879
2003	11.671516048933947
2004	11.330408276464848
2005	11.99487865040112
2006	11.835536163869273
2007	11.742538924555175
2008	11.232570085423536
2009	11.518006839195897
2010	11.020285359107879
2011	10.46977779150727
2012	10.628288540911813
2013	10.336163982430453
2014	10.769206741516001
2015	8.803149682468284
2016	8.246091739531728
2017	8.755818281123878
2018	7.976180217337688
2019	7.972497869231707
2020	7.478844846694832
2021	7.3528610328620845
2022	7.024739537472087
2023	7.123016260072959