Year	% of GDP
1970	-0.8995675156174915
1971	-0.0847027528394673
1972	-0.7225781275405678
1973	5.148048544086932
1974	22.068178983195825
1975	7.904706260901963
1976	0.8084142586451917
1977	-8.779173570703763
1978	-14.586833077014077
1979	0.7244737336150999
1980	7.997765547735847
1981	6.03068637625873
1982	-6.268385129846053
1983	6.553054817344367
1984	7.7687912230919185
1985	5.369119574128385
1986	-3.709755123623863
1987	-2.8940827459252376
1988	-9.64526963195207
1989	4.963627349134859
1990	17.032542930947077
1991	3.2476859198312296
1992	-6.205256482125595
1993	-3.319594090091646
1994	4.34963710229607
1995	2.6024206362281
1996	12.636226588764698
1997	4.347741065013356
1998	-4.852372519073783
1999	2.1556994233679223
2000	10.11810292231158
2001	1.613362031992444
2002	8.18032781959924
2003	14.106567003879142
2004	13.800628486041358
2005	17.487725750292725
2006	14.422475131385001
2007	5.844662909566376
2008	9.905575043054899
2009	0.13008371520602033
2010	1.4204243637826586
2011	5.163639684960503
2012	0.6782306160845926
2013	1.2409523556366249
2014	1.0197791995740244