Year % of GDP 1992 3.1249999999999997E-07 1993 2.4835329341317367 1994 4.021961009174312 1995 9.38664800613497 1996 4.542702967741936 1997 4.40181902520252 1998 2.3909222007859947 1999 5.100866367489404 2000 4.509989144170017 2001 4.809361530994314 2002 6.1855266578249335 2003 3.7808824173049413 2004 5.172299512327282 2005 5.160477016964336 2006 7.112223021259383 2007 6.759229629629631 2008 6.626357388316152 2009 22.52356320841506 2010 16.0841101892421 2011 11.600001140250855 2012 8.90000000044902 2013 7.300000026138408 2014 8.8000010883235 2015 8.499978451543907 2016 6.201812106514578 2017 5.4999958359072485 2018 3.94118312575782 2019 4.0979771035593595 2020 3.1346671548299794 2021 2.574286914515558 2022 1.655451735725114