Year	% of GDP
1970	17.143100947179793
1971	20.66012880562076
1972	15.4435925520264
1973	21.72067901234582
1974	29.465729659796025
1975	9.755177012304097
1976	21.4571810032425
1977	15.364787818783979
1978	25.029214764144324
1979	31.28984884304033
1980	31.92502552201254
1981	-30.673576042796103
1982	-40.08667133318159
1983	-8.310751921400906
1984	-4.000439835336674
1985	-4.671658295474258
1986	-9.935844935845003
1987	-2.905113636363653
1988	-3.124710532003598
1989	-0.9050416750376125
1990	0.27035484072845706
1991	-1.2103195168144425
1992	-0.7563305545034071
1993	-0.393599316517585
1994	-0.0284503804982109
1995	-0.01024571356906908
1996	-0.00856493551701861
1997	21.505850603426296
1998	23.554816776220854
1999	16.95516441402415
2000	26.07095279987524
2001	3.7665260863126284
2002	21.378055043434077
2003	0.550913150241329
2004	-7.69216006052759
2005	-7.046799148491558
2006	12.413366333474476
2007	17.706825241293338
2008	19.601071176582323
2009	0.11284169367302181
2010	5.336178808315751
2011	16.6637178551984
2012	15.408186131195064
2013	11.917054660837954
2014	8.900966046052082
2015	-0.5634757161202952
2016	1.6287271699201724
2017	8.051214434680073
2018	15.803492282955192
2019	7.113797977486989
2020	-2.2417615656482655
2021	13.140037356369575