Year	% of GDP
1965	15.7543391188251
1966	17.681498829039814
1967	21.3302752293578
1968	17.981072555205046
1969	19.11021233569262
1970	12.121212121212121
1971	9.379071456004592
1972	9.303278688524589
1973	9.51312262327785
1974	6.776816332987577
1975	12.724404567697029
1976	16.54295908534521
1977	23.3159720752358
1978	20.235443097343058
1979	13.650984346062293
1980	13.920681722757223
1981	16.630877877097028
1982	25.193568410848428
1983	24.785975948049526
1984	21.024131125104578
1985	18.854283915819373
1986	22.10997561144796
1987	17.544233417956907
1988	15.695801560586878
1989	12.298925862074904
1990	17.625113053964427
1991	41.855710967336925
1992	22.36334124494394
1993	17.191542060729372
1994	16.151762174190875
1995	14.758624089525382
1996	15.10430475867262
1997	13.638980307819306
1998	18.451906659077974
1999	14.555547073513855
2000	10.665237720715972
2001	14.30467289719626
2002	17.12769628990509
2003	16.63255579230683
2004	18.18550297715894
2005	16.426767034569284
2006	16.15772239094657
2007	20.45665211813165
2008	17.62982145290991
2009	17.965844924941468
2010	17.658579976901297
2011	13.548069106721492
2012	12.835007415436833
2013	14.351467331595332
2014	16.290176104856442
2015	25.428089612841326
2016	29.958732552523077
2017	27.730838776929804
2018	25.307660495506024
2019	24.56654699304526