Year % of GDP 2002 12.734828148148146 2003 26.528665398298536 2004 31.923367794778823 2005 39.34232543036211 2006 47.76561176068376 2007 47.450960132122724 2008 46.868538330477364 2009 46.60740073243244 2010 54.97249266384778 2011 44.82937546124328 2012 51.21772187910329 2013 54.02301355221518 2014 53.32455944047619 2015 56.93022907237927 2016 57.328087531255925 2017 54.593444772898934 2018 55.94045509334292 2019 55.08531810042106 2020 98.34762146831503 2021 95.12009921728433