Year % of GDP 1994 33.77416879561394 1995 43.329283888046504 1996 39.78347888717488 1997 36.166229229886895 1998 39.96249461749961 1999 25.692181507836224 2000 22.329301116851777 2001 29.075814536340854 2002 28.12695079734408 2003 28.467366307507326 2004 26.204203892236304 2005 29.660499349131044 2006 35.753189146748134 2007 35.83673384984422 2008 28.070489033159113 2009 29.0092868820684 2010 23.75060735381112 2011 26.101929549048204 2012 29.273875349854862 2013 29.665373082030914 2014 31.03625660943006 2015 36.646126407051746 2016 41.83375862902975 2017 38.605165291102416 2018 35.896585806586685 2019 37.857515622252535 2020 40.90021662335221 2021 34.05314153782609 2022 31.60704387173431