Year	% of GDP
1989	16.8916933617749
1990	15.5915692080229
1991	10.7158117387585
1992	8.28528790338103
1993	3.19482220249035
1994	5.05796900669132
1995	4.80099290842812
1996	1.73862142563577
1997	2.83732741681492
1998	2.75573196385248
1999	5.46421893738476
2000	9.26055948386874
2001	7.83240488201452
2002	10.2074772689676
2003	8.54124638013142
2004	6.79013817771358
2005	7.07149926611239
2006	6.89504527492277
2007	8.63267325506495
2008	12.0001652592319
2009	20.0187995143775
2010	23.2485607720895
2011	24.2607793938216
2012	27.190466704245
2013	28.541648688556
2014	34.934677506126
2015	43.1683570892788
2016	44.0749950231983
2017	32.0678574960899
2018	31.897118052194