Year % of GDP 2005 8.264764504404319 2006 8.350504182776652 2007 7.837877891398779 2008 8.094072299931625 2009 8.327582816999236 2010 8.871213476066822 2011 9.366835102970041 2012 9.457778351219579 2013 8.929362567615428 2014 9.745176379653156 2015 9.642274697293512 2016 9.559063336604394 2017 9.956474413723928 2018 10.075058576683832 2019 9.995756074790913 2020 9.514999285808305 2021 9.794253597875002 2022 10.266136391140723