Year	% of GDP
1960	8.505521472392639
1961	8.412485875706215
1962	8.569105263157896
1963	8.320141509433961
1964	7.633067729083666
1965	7.634249084249084
1966	7.471019736842105
1967	6.867740963855422
1968	7.0379291553133525
1969	7.5464778325123145
1970	7.754617117117117
1971	7.640408163265307
1972	8.060176991150444
1973	8.412011577424023
1974	8.408666666666667
1975	6.894454545454545
1976	8.48983223924143
1977	10.319091400757166
1978	10.47097133076594
1979	11.189162320730118
1980	10.142620097202345
1981	9.861568427264327
1982	14.42686588250729
1983	18.115034750119367
1984	16.567142895815234
1985	14.566314890479662
1986	16.68217992695597
1987	18.53656700425887
1988	20.0960561464169
1989	19.132199302995943
1990	18.70447104917174
1991	16.433390033604354
1992	15.256744442975048
1993	11.595984682659715
1994	12.75459571252717
1995	22.865926921195754
1996	24.72313195214161
1997	23.25557214692713
1998	23.22174939516405
1999	23.416859249037376
2000	24.2311734715837
2001	21.541210202139254
2002	21.85176192084599
2003	23.655593509055265
2004	25.10335600800549
2005	25.487073828511402
2006	26.554748170575927
2007	26.781061327925737
2008	27.020061234520227
2009	26.5132697232887
2010	29.01746011549926
2011	30.44296622748666
2012	31.53945039141298
2013	30.755800584348986
2014	31.462992199987966
2015	34.16277268732376
2016	36.815677251480814
2017	37.51408861988743
2018	39.04393044193307
2019	38.49703330005637
2020	39.243432440336875
2021	40.67732036284521
2022	42.761030737711046
2023	36.20345661932523