Year	% of GDP
1975	10.90140259504641
1976	10.509137010894092
1977	8.74575337713107
1978	10.389241859267798
1979	8.542483146630465
1980	7.6884588420413795
1981	7.658458877223411
1982	7.640900209512477
1983	9.896278241996542
1984	11.907205090859708
1985	19.586802311018477
1986	23.927849878607397
1987	19.214253264338886
1988	22.246674649831036
1989	30.309548967155333
1990	21.706581328972476
1991	23.656201616533217
1992	18.77882115841163
1993	26.029895715100146
1994	28.130820209506858
1995	28.08092234549977
1996	33.79756583629027
1997	44.74208812312441
1998	41.10342740305466
1999	74.5424498338126
2000	78.45958482716884
2001	62.3221466767476
2002	45.89565264348677
2003	53.69080433138597
2004	55.44348398762168
2005	57.536622303438506
2006	73.99520984136578
2007	77.47446465407985
2008	34.53571053814889
2009	51.261175496146826
2010	50.798992873915246
2011	39.31547162484216
2012	49.05671430662186
2013	58.140983650242426
2014	51.40934577957418
2015	61.55683965908748
2016	60.64006493882517
2017	73.45083209646849
2018	50.437113414430186