Year	% of GDP
1972	3.356164592538269
1973	0.6739726396697338
1974	1.6868052199130017
1975	2.1263345195729535
1976	2.8523739930405783
2003	3.667608519386239
2004	3.0549142299893193
2005	1.2055485410950033
2006	1.9759233207942293
2007	2.362088084285807
2008	1.4688783374851238
2009	5.890371715641351
2010	2.9308655500090217
2011	3.5300986962872933
2012	6.590938461900355
2013	9.680070743460046
2014	3.424716382463356
2015	2.3259789950243825