Year	% of GDP
1967	-7.2676737685343
1968	-5.74935226114752
1969	-4.58148770560313
1970	-4.8843969396636
1971	-5.12454462009305
1972	-3.47820981600843
1973	-1.0592931688073
1974	1.88495803275013
1975	-7.4004824927044
1976	-6.3585787497612
1977	-2.77014264473873
1978	-6.68853014842081
1979	-2.73224609150637
1980	-0.584478728854506
1981	-6.40981053946146
1982	-5.9991213774179
1983	-4.46516717237525
1984	-3.51641086907012
1985	-3.83785863698753
1986	-4.62639655923883
1987	-1.22754849048355
1988	-1.53448610144074
1989	3.61935543150933
1990	1.83636629766811
1991	4.24230074160877
1992	3.37198858339166
1993	1.31480688931591
1994	0.788150178559906
1995	2.56983491672255
1996	0.319511707033495
1997	-0.158855165608585
1998	-2.70194338157129
1999	2.37029066270862
2000	8.48503069496811
2001	1.17266531038734
2002	1.37984128936818
2003	0.74149381159981
2004	3.91970843285582
2005	2.26526391053989
2006	3.95771748464028
2007	-1.49120919516425
2008	-0.539903852539901
2009	-3.29003358308661
2010	0.277025194628244
2011	0.892608371121646
2012	3.27199360941252
2013	-2.02124801657537
2014	-1.38642452915216
2015	-4.1569952990495
2016	-4.94494566156455
2017	-4.23407394723196