Year	% of GDP
1967	-14.542761793410882
1968	-20.985944187751613
1969	-27.991549082393945
1970	-27.79731437700828
1971	-22.730312645222085
1972	-21.747610127472893
1973	-19.357957185749584
1974	-18.49363867684224
1975	-11.480033391045017
1976	-16.027222610242493
1977	-9.586993814481632
1978	-4.277086175310621
1979	-6.283810571458555
1980	-6.030047313359528
1981	-11.850694480142792
1982	-6.850362362238359
1983	-7.091046076025743
1984	-2.4345156819859723
1985	-0.3744494320987512
1986	2.60914725839359
1987	-0.4488604921888903
1988	3.0642329368109693
1989	1.4460551922548666
1990	-0.3543553564199975
1991	-0.9640434296452336
1992	7.468930592587532
1993	4.122178005770573
1994	6.232814693169002
1995	0.04224163243668669
1996	5.959620103415293
1997	-3.2081123658119917
1998	-3.7691864170183877
1999	-4.481345183575288
2000	-3.339934733830234
2001	-3.641917358379734
2002	-4.66106017866377
2003	-5.8639769907863215
2004	-12.693732584046133
2005	-12.979252145376515
2006	-10.489366174142397
2007	-7.429180187116878
2008	-9.016165896233838
2009	-8.530718331178386
2010	-6.005879353843828
2011	-3.7236961803760065
2012	-9.702087269081087
2013	-5.37952364806768
2014	-13.700862637862823
2015	-2.083556335764532
2016	-9.3310783268411
2017	-5.927373428956704