Year % of GDP 2004 9.30569914804177 2005 10.537671196500922 2006 11.512538405530254 2007 11.644443231583 2008 9.604491892775581 2009 10.543413464787356 2010 10.247418356942948 2011 10.8080463783269 2012 12.517253849350125 2013 12.830267894309841 2014 11.554646225429924 2015 12.925375684267584 2016 13.61052905879474 2017 11.512138393370892 2018 13.629188835115178 2019 13.396367022204196 2020 14.4035059657002 2021 13.491712756789061 2022 16.15557542212297