Year % of GDP 1990 26.265837346995124 1991 18.239367374354288 1992 19.84950914770192 1993 18.980882831759615 1994 8.993665940900296 1995 9.402734401610283 1996 9.494441288423944 1997 10.589091758037974 1998 11.036483063754071 1999 10.718946374596431 2000 10.646870112031143 2001 9.802508066499957 2002 10.395499106182843 2003 11.720815896043415 2004 12.188179180118272 2005 12.8998034816805 2006 13.684175095508172 2007 13.862003928412353 2008 13.201705933099234 2009 13.137685066146892 2010 13.678413489297094 2011 14.519716947559564 2012 15.00919379176025 2013 15.020480685304333 2014 15.316266378731724 2015 15.589588360314863 2016 16.16640369008736 2017 16.57375161372743 2018 15.699416453684778 2019 17.42176912798908 2020 17.071118754750167 2021 18.907230918604675 2022 19.841156186323545