Year % of GDP 1990 2.1512658710012227 1991 2.508648336038187 1992 2.902776420236981 1993 2.1489272198540936 2000 2.361018880524385 2001 1.8827904769360269 2002 2.1445516183533417 2003 1.644174255004467 2004 1.7615831705168732 2005 1.5282860508727218 2006 1.5144073772743638 2007 2.018547607990704 2008 2.1390771251010827 2009 2.4778254713760175 2010 2.3724790494575356 2011 1.5683125820726573 2012 2.1200950833898693 2013 2.1728476107037364 2014 2.089714462351744 2015 2.4762629171942208 2016 3.2579472106051792