Year	% of GDP
1977	15.329593267882188
1978	15.425276309466602
1979	12.616247357760365
1980	12.50655283456901
1981	13.831055029793198
1982	13.235759994931254
1983	13.734995383194828
1984	12.934202145901718
1985	12.457448720534698
1986	12.137512639029323
1987	12.026529551456505
1989	13.562050947093404
1990	12.85912823752369
1991	14.161277465639827
1992	13.743004181408814
1993	12.871604139715394
1994	14.810678122123349
1995	13.887430737824438
1996	14.321695760598505
1997	10.035752863071588
1998	9.524060399050521
1999	9.18157126552115
2000	9.254042917264597
2001	9.646746807761158
2002	9.529160605146176
2003	9.721434619039943
2004	10.023974936197517
2005	9.751733392976963
2006	10.238756792643045
2007	10.097623545676631
2008	11.184685540566216
2009	12.672861842764346
2010	12.517135906558794
2011	13.759067370375702
2012	13.088008954806213
2013	11.827853556243868
2014	11.302977009504197
2015	11.529399669291204
2016	10.841968139905152
2017	11.911708221987954
2018	11.422184879278365
2019	12.575098723129639
2020	18.483260026912493
2021	14.787710332573953
2022	13.303492585487653
2023	12.958119747532868