Year	% of GDP
1965	21.980326638312235
1966	22.097077878195623
1967	21.948017545077185
1968	20.276395698181148
1969	21.181572204989347
1970	21.24144565302348
1971	23.192414584953404
1972	22.947120517660903
1973	30.39218869603949
1974	44.77030193396979
1975	39.067228709705354
1976	37.67677578802188
1977	34.101717227180586
1978	29.983750741880545
1979	35.76101880770397
1980	32.59609401933993
1981	25.071789539925938
1982	24.8786791256714
1983	22.135996024860187
1984	20.491812124297677
1985	18.224594309706784
1986	11.307197802238083
1987	17.246608488186997
1988	17.862862238902657
1989	20.547553813047788
1990	17.980939331982174
1991	28.418214712829048
1992	26.92771968202775
1993	25.323713355608717
1994	27.12474195787817
1995	25.067463948634995
1996	24.0834423503199
1997	25.71857424583481
1998	22.374147448235195
1999	26.74195560349994
2000	31.517025432872014
2001	27.985647307130662
2002	30.937541380373062
2003	31.509778660475284
2004	34.52481215004654
2005	38.39106145135446
2006	39.11362560038831
2007	38.250799194602955
2008	39.223407080507975
2009	30.242454280716963
2010	31.54024343702371
2011	30.18044847453787
2012	29.71730748503225
2013	29.414998245487638
2014	26.105456638248032
2015	21.62274116596288
2016	20.38192376758129
2017	24.350437403053846
2018	29.698115360049314
2019	26.693813983351067
2020	19.594977689759478
2021	24.97142107771653
2022	29.78322368614346
2023	31.80765066188712