Year	% of GDP
1972	0.975633258253737
1973	-0.06733618069183116
1974	0.6156771669498262
1975	0.5171647716098392
1976	2.759374541770532
1977	3.1125406648240097
1978	3.39742820683412
1979	2.2373375210489472
1980	3.123357145066023
1981	1.6967580390089616
1982	1.2712911845373325
1983	3.174102685374954
1984	5.7224469451526945
1985	-1.8403046291492506
1986	-5.839673095687005
1987	4.638909318433792
1988	1.8696556202896002
1989	1.2983517783015406
1990	-2.2286122030349413
1991	-1.7710089276165353
1992	-2.610686267813783
1993	-3.483345604867493
1994	-5.294281749254145
1995	-5.350974946028267
1996	-4.5861897284669295
1997	-7.040017650493326
1998	0.32270452880608386
1999	0.66460402386284
2000	-1.0710464860739808
2001	0.6905527903056582
2002	0.4803917486078597
2003	0.5696049622056233
2004	0.5251166211497019
2005	-0.7874089778726325
2006	-1.3050540568464948
2007	-4.01360334671079
2008	-1.7208047262628239
2009	1.1848672690155084
2010	-3.0980478628515926
2011	-4.827504163015461
2012	-3.363582499142421
2013	-3.1919584337892535
2014	-2.2319957067075675
2015	-2.126774230648154
2016	-1.0150194280148925