Year % of GDP 1994 24.524084132948353 1995 35.08540962913253 1996 35.76540592447252 1997 35.43186486308626 1998 31.97428179075448 1999 18.882312518011126 2000 20.15128546236426 2001 29.119674185463655 2002 32.64712558878611 2003 34.86569464062664 2004 31.511011842925413 2005 34.307888778525644 2006 41.888714910360946 2007 46.01657062505169 2008 41.11796712450219 2009 42.9640491480002 2010 31.276869650304057 2011 29.03183654958846 2012 27.14440104344853 2013 27.827904932990926 2014 31.790072751614655 2015 37.067176230068064 2016 48.86907022495185 2017 42.61136154862737 2018 40.65910026411561 2019 43.73540583286654 2020 43.84920402520773 2021 36.801562086618404 2022 30.66116410341266