Year % of GDP 1995 22.794795059460625 1996 21.11234211317322 1997 24.621872503451712 1998 24.379618303210748 1999 21.396568842649195 2000 18.83263051350063 2001 19.08929482611783 2002 20.809011019280298 2003 21.9689061787162 2004 22.887956965628735 2005 24.266252073470433 2006 26.947131683560478 2007 32.30990741891956 2008 28.123962513610273 2009 12.656999298992844 2010 18.125705464536367 2011 21.96246480524676 2012 19.760166988709393 2013 19.52576376499909 2014 19.622590890741996 2015 21.26976178086161 2016 19.208250211841843 2017 19.181119387064577 2018 20.356348444803942 2019 17.783959120213662 2020 14.580133383134323 2021 20.36996034587349 2022 26.91364178442318 2023 19.686694302804987