Year % of GDP 1990 18.864653647310707 1991 21.391460449462144 1992 19.347257704771177 1993 19.092602962559084 1994 16.641935797761597 1995 16.50321683185533 1996 18.799343361958986 1997 20.531583780153163 1998 22.31874668713546 1999 25.177210396868933 2000 26.42133115381378 2001 23.557185973222374 2002 12.866587254098057 2003 13.331104689595255 2004 26.272571485524992 2005 27.11094060755353 2006 31.211270292333026 2007 37.114865752483354 2008 47.2813247965301 2009 47.03689801570671 2010 49.11835735320364 2011 51.82310456534039 2012 50.62003213167164 2013 51.904883426189144 2014 52.92023152220903 2015 53.6425107772102 2016 54.718555151750614 2017 52.643441527460745 2018 52.4103858630072 2019 50.784971063914575 2020 49.79731972663402 2021 46.25208356927483 2022 39.6482630728913 2023 34.76159462215154