Year	% of GDP
1965	23.75939243959539
1966	20.994734857892194
1967	20.625272657141355
1968	22.123551689286103
1969	23.383428616446402
1970	26.20993167591827
1971	23.018157775206067
1972	20.391869575477912
1973	20.69372592052928
1974	25.43808980762554
1975	22.684959133732722
1976	22.642596864459723
1977	25.05995286307645
1978	23.65519780511745
1979	21.07854679941373
1980	27.884748187111374
1981	21.86705334121039
1982	33.21433786080761
1983	30.39760327616604
1984	33.47859419853745
1985	33.44877105846223
1986	23.281370600862047
1987	16.69425643221139
1988	16.032974869317258
1989	20.70703663809261
1990	20.182914399795447
1991	19.99888046106723
1992	20.547022248546337
1993	16.390717236617988
1994	21.481020513099697
1995	21.61848796659708
1996	24.26249197279904
1997	26.650655331466094
1998	21.979185003629123
1999	19.428600566928772
2000	24.856812731704654
2001	25.26121724904234
2002	22.986158365901275
2003	19.436911458591624
2004	20.54757370521009
2005	22.245456398115422
2006	24.179094058435087
2007	26.97864180471478
2008	27.008365469603678
2009	19.582415284910127
2010	22.368890297981984
2011	24.229686622930963
2012	23.876723843779207
2013	23.63910866802923
2014	23.60997553368548
2015	20.989149629531486
2016	18.94997875596487
2017	18.35109858300218
2018	18.73625346901809
2019	19.85009074731856
2020	15.23573698147905
2021	16.515641021859146
2022	19.29148408331344
2023	18.30000000009387