Year % of GDP 1993 3.725398094194883 1995 5.327589741512013 1996 6.7013320119888 1997 6.52014209469263 1998 9.560549036115544 1999 16.193417423016125 2003 3.0135318272309966 2004 8.373187492808626 2005 7.535886146038656 2006 8.275435992849497 2007 8.115470777113234 2008 6.185785926421724 2009 4.776210385131774 2010 3.8368909943345977 2011 3.5040421301508737 2013 3.8272476433366593 2014 4.904913759738906 2015 4.1698084788088545 2016 4.958279993369933 2017 4.975143397182558 2018 3.8467056284223693 2019 3.4421455821983007 2020 3.047137413721632 2021 3.1419907596961276 2022 3.223488034953989