Year % of GDP 1996 1.57321000099182 1997 1.53640997409821 1998 1.54648995399475 1999 1.62127995491028 2000 1.60906004905701 2001 1.59658002853394 2002 1.61372995376587 2003 1.57962000370026 2004 1.52997994422913 2005 1.54904997348785 2006 1.57539999485016 2007 1.61708998680115 2008 1.6078599691391 2009 1.66659998893738 2010 1.63496994972229 2011 1.6452100276947 2012 1.57631003856659 2013 1.62011003494263 2014 2.26449990272522 2015 2.27027010917664 2016 2.31145000457764 2017 2.3231999874115 2018 2.70481991767883 2019 2.66551995277405 2020 2.93144011497498 2021 2.91476011276245