Year	% of GDP
1977	-11.0619844690737
1978	-7.8668396092707
1979	-16.3026590285205
1980	-21.2075448351032
1981	-20.3156035652955
1982	-21.4114548122979
1983	-30.5033964647344
1984	-19.9075540517231
1985	-15.7978569351281
1986	-11.2342875671253
1987	-15.0380392454371
1988	-18.3585062876737
1989	-20.8793140843859
1990	-23.0071971255201
1991	-15.8735311504698
1992	-5.09203887804876
1993	-9.61752358462452
1994	-7.51512992095498
1995	-17.1241871441426
1996	-19.661634058044
1997	-14.9408629403055
1998	-12.5454712025731
1999	-14.5835626793997
2000	-22.8009970225543
2001	-18.714154647329
2002	-20.7264497408887
2003	-18.6529654101394
2004	-9.01284404840769
2005	-9.25532089389489
2006	-12.9302844182102
2007	-15.6504452064332
2008	-25.4062473032332
2009	-24.8753444868109
2010	-20.2308127361023
2011	-13.793512866848
2012	-9.14799420328135
2013	-6.48618859887117
2014	4.86357005662002
2015	1.36496567966954
2016	0.433337726778708