Year % of GDP 1996 0.998520016670227 1997 0.730000019073486 1998 0.705780029296875 1999 0.845229983329773 2000 0.722100019454956 2001 0.708760023117065 2002 0.620899975299835 2003 0.611469984054565 2004 0.627590000629425 2005 0.678520023822784 2006 0.660650014877319 2007 0.962029993534088 2008 0.741469979286194 2009 0.621670007705688 2010 0.669130027294159 2011 0.677600026130676 2012 0.646030008792877 2013 0.651910006999969 2014 0.505479991436005 2015 0.499989986419678 2016 0.500630021095276 2017 0.584110021591187 2018 0.604430019855499 2019 0.577329993247986 2020 0.539009988307953 2021 0.459809988737106 2022 0.48063999414444