Year % of GDP 1993 1.1745022822528404 1994 3.337194447356012 1995 2.3584061631384112 1996 4.75059958515879 1997 4.784991675729222 1998 4.266321531332919 1999 4.4009754527347305 2000 7.877986971804142 2001 4.037719395848485 2002 3.6004815944111614 2003 4.4455575729528904 2004 7.1956489435672415 2005 10.405572830417446 2006 12.810464740853904 2007 16.39158672024681 2008 8.340517258867237 2009 9.555313556177564 2010 9.861366407699935 2011 8.413601223560507 2012 7.282109822786255 2013 7.531181646255608 2014 6.035813425188346 2015 7.161952238856748 2016 6.330239636052929 2017 8.299563956286988 2018 5.3062249906693335 2019 4.527007694555993 2020 7.167291620589843 2021 5.783889348481896 2022 5.012488299348321