Year	% of GDP
1960	12.491209713777218
1961	11.754367182490942
1962	12.243590858319621
1963	12.177103060825974
1964	12.065386246710279
1965	11.487677763734142
1966	11.16732670265043
1967	10.961605765743096
1968	11.028831582345724
1969	10.947700331771443
1970	11.02069616861038
1971	11.712415285512565
1972	11.453357997651066
1973	12.163652834141905
1974	15.151464007779921
1975	14.254418185384749
1976	15.607080873928995
1977	15.436248273578068
1978	14.519397415994625
1979	15.944889161247172
1980	18.732919478412093
1981	19.37478611746053
1982	18.765220504033366
1983	18.355704405592867
1984	19.474064259344512
1985	18.573467633717218
1986	16.00971297912601
1987	16.35856388431475
1988	16.45317817358546
1989	17.1224616447422
1990	17.638789331894543
1991	17.63508563003753
1992	17.945764175136237
1993	17.564772779133257
1994	18.089038760112988
1995	18.810410109151704
1996	20.290436885087185
1997	22.32890290982497
1998	22.848750172368522
1999	21.630454942203016
2000	23.66010653763732
2001	23.508238830644075
2002	24.862563315869437
2003	26.424442739825142
2004	29.30341839969674
2005	31.67943738389069
2006	34.80415740300323
2007	36.313622751991595
2008	35.951961485015616
2009	29.293924146944388
2010	32.085140192139114
2011	32.625111614993386
2012	31.86505481943753
2013	32.40296107387146
2014	32.29727066680115
2015	30.214121655303245
2016	28.14771834897526
2017	29.179740483177312
2018	29.11635626222555
2019	27.929571768675288
2020	26.638817911741665
2021	29.075339519672433
2022	31.553891467659028
2023	29.989602271559562