Year % of GDP 1989 21.012216404886562 1990 17.94473765911208 1991 12.985341437254199 1992 48.254602840610204 1993 30.493848755174625 1994 23.19533360622186 1995 25.89389411616383 1996 21.84951268912815 1997 22.527079880845964 1998 24.551047811796593 1999 26.17331298598751 2000 24.033465731840863 2001 24.217365068386915 2002 24.43285166889802 2003 23.878287231820806 2004 22.163961342945797 2005 21.510182525424074 2006 21.0029264232898 2007 21.54206226092363 2008 22.072905707321958 2009 20.496959823666003 2010 21.139944702283117 2011 19.98003792793692 2012 20.2440700464294 2013 20.441812574243993 2014 20.690244211059092 2015 20.655959868764697 2016 20.66363686269288 2017 20.78564335737431 2018 20.787643568322107 2019 20.795322981927463 2020 20.44472269155781 2021 20.425226610475296 2022 15.232985655940755 2023 18.745522184507323