Year % of GDP 1996 4.857952081445392 1997 4.583428909466263 1998 4.723942959298216 1999 4.532522982727449 2000 4.317845805757793 2001 4.099040019593611 2002 4.066542832525791 2003 4.124160073656782 2004 4.177557018447623 2005 4.425844014211049 2006 4.904925320973721 2007 5.29679097861481 2008 4.997797674788743 2009 5.197580983551528 2010 5.452125406870515 2011 5.6618976737319935 2012 4.614457713809385 2013 5.0598013559467665 2014 5.3257889852039515 2015 5.671519416693915 2016 5.684427417980155 2017 6.158166883939723 2018 6.1332935598241125 2019 6.256195101662061 2020 6.156036162035932 2021 6.155171232898777 2022 6.536652878706323 2023 5.899857034234163