Year	% of GDP
1960	22.229097074448347
1961	22.822576227888472
1962	19.852936213236536
1963	22.32227133745929
1964	22.61537939645091
1965	20.12345264949534
1966	19.464944649446494
1967	19.280825219319386
1968	18.053054662379424
1969	16.924538127453197
1970	16.285526315789472
1971	16.068765703912387
1972	15.514975845410628
1973	15.31539735099338
1974	15.091554293825407
1975	17.17396593673966
1976	19.87132556849695
1977	20.70691489361702
1978	19.879475542107915
1979	17.877254901960786
1980	15.537180910030521
1981	17.390068303489016
1982	18.47239436605634
1983	19.01288788788789
1984	18.83735002608242
1985	20.729707457766793
1986	31.679581519723616
1987	27.067057934427012
1988	16.240364188163888
1989	14.733962882989161
1990	15.692257217847768
1991	15.996747755951606
1992	15.756311179804225
1993	8.685699250098672
1994	7.698094384950527
1995	8.112384018178375
1996	7.5472032007386325
1997	7.8577118831599915
1998	9.73915311712025
1999	10.901745670323605
2000	4.780545256270448
2001	4.897427134697066
2002	2.8660743978336263
2003	3.6358401417462347
2004	2.93264923853734
2005	2.2103552237435293
2006	2.0104197616463515
2007	2.1700179223150666
2008	3.1940955807505125
2009	4.846129420810514
2010	5.950919424982604
2011	7.13274735963483
2012	7.37854729228577
2013	8.842595350843427
2014	11.117457787761468
2015	15.167564447039187
2016	17.84360895383864
2017	15.681309544024764
2018	12.921882892927883
2019	12.560761299079445
2020	15.457030048107223
2021	13.82212058920122
2022	12.69202006968155
2023	13.715359546012182