Year % of GDP 2000 4.262187 2001 4.24420071 2002 4.5927887 2003 4.62578392 2004 4.37697315 2005 4.26226091 2006 4.58488178 2007 4.63239908 2008 5.06513548 2009 5.57623196 2010 5.80644417 2011 5.70106649 2012 5.503479 2013 5.45445585 2014 5.44291878 2015 5.51982641 2016 5.36528826 2017 5.1788969 2018 5.27453423 2019 5.23799706 2020 5.61917925 2021 5.29930544