Year % of GDP 2002 60.9375 2003 63.358778625954194 2004 70.13752455795678 2005 73.4 2006 76.06490872210954 2007 74.13127413127413 2008 72.67857142857143 2009 58.96296296296296 2010 69.9825479930192 2011 72.10526315789474 2012 65.625 2013 69.90595611285266 2014 72.00622083981337 2015 68.35066864784547 2016 69.00149031296571 2017 76.9607843137255 2018 76.21283255086072 2019 78.67078825347758 2020 73.9251040221914 2021 80.26666666666667 2022 71.29735935706086