Year % of GDP 2000 9.88843536 2001 9.92069149 2002 10.18365669 2003 10.40202236 2004 10.14603233 2005 10.31153965 2006 10.17995167 2007 10.05132961 2008 10.25128746 2009 11.23791218 2010 11.09592915 2011 10.77844906 2012 10.85345554 2013 10.99905777 2014 11.02588272 2015 11.19047737 2016 11.241889 2017 11.33617592 2018 11.48051548 2019 11.71550655 2020 12.69255257 2021 12.93412971 2022 12.65471077