Year % of GDP 2000 5.96185923 2001 6.13948441 2002 6.13245678 2003 6.79239893 2004 6.99578476 2005 6.89948606 2006 6.80942583 2007 6.77762461 2008 7.2682395 2009 7.87510586 2010 7.77896738 2011 7.89500046 2012 8.02982998 2013 8.03675461 2014 8.07582664 2015 8.24744034 2016 8.28666973 2017 8.28564739 2018 8.31993294 2019 8.12080002 2020 8.72332096 2021 8.56881809