Year	% of GDP
1970	28.06520222822156
1971	26.10982721556465
1972	28.738184765825704
1973	31.264602487245174
1974	29.651301142048474
1975	19.4508314348027
1976	24.778006327720615
1977	30.120736267669727
1978	31.61934044675278
1979	30.596656264316575
1980	34.02254932001795
1981	35.847533835101146
1982	35.37789882360446
1983	29.320336092740202
1984	23.058384251120646
1985	21.403288462393785
1986	23.172106491014333
1987	27.378501750036964
1988	30.47077802423225
1989	28.293476022575888
1990	27.721131452628967
1991	25.73868047215504
1992	24.946002222503814
1993	22.1454534250659
1994	22.95076839185098
1995	24.193377637245092
1996	24.40835152424722
1997	26.524344147655803
1998	28.31676211070771
1999	29.02782076130756
2000	28.77663879635971
2001	28.157491781127415
2002	25.904329497322713
2003	23.11470535838213
2004	23.824323841116794
2005	23.358613928148458
2006	22.925673330080645
2007	23.099886239382837
2008	23.579493162643857
2009	20.842507478361334
2010	21.1260010180124
2011	18.597742820881667
2012	15.701947565832825
2013	14.632119184242894
2014	15.316618124024872
2015	15.855321980067135
2016	15.832524491110133
2017	17.226724993940966
2018	18.29047163512514
2019	18.492561759409764
2020	19.11664528272625
2021	20.627458488709603
2022	20.65124772010129
2023	19.58930227039697