Year % of GDP 1996 5.2575798034668 1997 5.51279020309448 1998 5.80772018432617 1999 5.53938007354736 2000 5.27427005767822 2001 5.44695997238159 2002 5.60254001617432 2003 5.05714988708496 2004 4.83406019210815 2005 5.29892539978027 2006 4.68466997146606 2007 4.63328981399536 2008 5.36644983291626 2009 5.52265977859497 2010 5.03881978988647 2011 5.07161998748779 2012 6.58270978927612 2013 6.99697017669678 2014 5.28122997283936 2015 5.28251981735229 2016 4.65749979019165 2017 4.36671018600464 2018 4.24356985092163 2019 4.42054986953735 2020 4.82104015350342 2021 5.61999988555908