Year	% of GDP
1964	21.97900982993848
1965	21.361730363629018
1966	22.85003230737207
1967	21.461757216492966
1968	20.729487425575083
1969	21.867082168009482
1970	24.536092793280677
1971	16.951836358918822
1972	20.948424086053574
1973	21.569191974831988
1974	27.405660787560233
1975	22.249071517015185
1976	27.61118217356197
1977	25.36530295821181
1978	21.49685309402591
1979	21.328839934903208
1980	23.064242193433756
1981	41.572952545457824
1982	39.66242322997554
1983	30.05441757099103
1984	25.92310496677641
1985	32.7285211974022
1986	13.543311344584053
1987	5.380554314534402
1988	3.5421396898146953
1989	0.6171399035157776
1990	-2.1474461395710307
1991	-1.689381138080672
1992	-3.4718268487320985
1993	-0.47343375117463
1994	5.236145730634304
1995	15.071133650387944
1996	21.802720082720796
1997	22.71751444226413
1998	24.763001611373404
1999	-5.112669617448658
2000	-0.44499818968371807
2001	2.740284697657528
2002	9.574912389497586
2003	6.566777631794346
2004	8.00583248616223
2005	12.454288703765034
2006	17.375251152452375
2007	18.027285465538775
2008	21.40483672253262
2009	14.323865964934345
2010	17.41983655346057
2011	17.835475913925503
2012	17.853730490271452
2013	18.641413642961624
2014	21.258907035344453
2015	17.572576715401052
2016	14.229028930141569
2017	11.0876879141061
2018	11.96752698926003
2019	14.614207253220938
2020	13.066086780867675
2021	12.202362624537235
2022	12.62847377335539
2023	4.666678208965009