Year	% of GDP
1960	-16.3230240549828
1961	-15.5573376102646
1962	-13.6085626911315
1963	-15.6272927366104
1964	-8.7706685837527
1965	-13.7888956680903
1966	-15.8064516129032
1967	-10.849539406346
1968	-15.3206069505629
1969	-16.117381489842
1970	-14.9111937216026
1971	-12.0223978919631
1972	-14.6543778801843
1973	-9.94505494505495
1974	-10.9425785482124
1975	-16.764206154427
1976	-8.43137254901961
1977	-4.62912087912088
1978	-17.9218184088922
1979	-17.6402544823597
1980	-13.9588100686499
1981	-5.82979875462503
1982	-6.35035324341683
1983	-7.57132968485245
1984	1.94447709643184
1985	-5.70723430510566
1986	-2.13809069862454
1987	-2.35735333511921
1988	-9.22080409687641
1989	-15.7376604470548
1990	-9.63869311608762
1991	-6.03572644506044
1992	-19.2496085754543
1993	-16.0916685137551
1994	-32.1123135372008
1995	-17.7199359212007
1996	-9.05091727301629
1997	-12.2288952694735
1998	-5.33485309966501
1999	-15.2714119521669
2000	-9.73133053150712
2001	-11.1359509573227
2002	-10.1795634456955
2003	-10.5015363374529
2004	-13.7697430734046
2005	-21.2056733636856
2006	-19.092298238077
2007	-9.82127463585667
2008	-16.652251582471
2009	-11.6257655446798
2010	-12.0733984407672
2011	-7.23352521793864
2012	-15.474793136163
2013	-6.94955892382804
2014	-5.92347593221683
2015	-6.59823485110678
2016	-11.9738781578846
2017	-7.00418259698149