Year % of GDP 2002 18.82275218294074 2003 16.923866234169584 2004 17.554006257016123 2005 16.59821221925955 2006 16.38553719720168 2007 17.747309525587596 2008 17.839116298999986 2009 13.149876609409969 2010 12.522576843290661 2011 13.779189242992897 2012 12.486085136395296 2013 11.499867256190493 2014 11.47758755580297 2015 11.420006004901245 2016 4.114196612834704 2017 3.5304224614667636 2018 6.160177216502386 2019 7.043181080925083 2020 7.528114629249116 2021 8.49315681616916 2022 10.190261959840772