Year	% of GDP
1975	13.703331537761985
1976	13.218305073120238
1977	12.423155172646167
1978	12.353174444701814
1979	11.807871780944525
1980	7.910702701814917
1981	7.9911950004849395
1982	9.300270223200659
1983	12.36348463558407
1984	14.807569972416504
1985	24.19352030093215
1986	31.109146205926685
1987	27.877945127369298
1988	36.22081001606963
1989	45.59467682815621
1990	31.874802924593183
1991	33.78141769291668
1992	27.30405009589064
1993	34.69878378018525
1994	34.35296937159155
1995	35.21294429592791
1996	42.550630427589894
1997	54.186749978915806
1998	94.39498986776074
1999	71.30244039388953
2000	77.0634840987753
2001	70.0509832498738
2002	49.36712713518086
2003	54.56213543536569
2004	74.00772796724134
2005	74.79129352792337
2006	97.0381826331265
2007	81.87190490707032
2008	32.32346047018301
2009	53.75402749445115
2010	55.81940865930984
2011	43.81952015331995
2012	60.36791322171524
2013	71.73860397399952
2014	70.70091867713853
2015	89.66568928686362
2016	79.43160379736383
2017	87.07721612626273
2018	59.10069839754596