Year % of GDP 1990 39.17402152697482 1991 41.39872015567689 1992 36.18660325255353 1993 37.192991136322085 1994 43.793412033436184 1995 40.927513472563895 1996 38.44100179863036 1997 37.4214617907772 1998 37.70099040639167 1999 38.14741515144669 2000 39.320489785045 2001 38.22174950684581 2002 38.063751721284525 2003 38.11653490051716 2004 37.254036909001215 2005 36.305773490423825 2006 35.66087737691749 2007 33.89626339067938 2008 35.315794503009826 2009 39.190957281172835 2010 40.03630007152192 2011 40.49952845036223 2012 41.925143361894754 2013 42.75392068002917 2014 41.47942822062051 2015 42.495359192334405 2016 41.81660744817793 2017 41.08630177753007 2018 40.40905553775468 2019 39.62984954459871 2020 39.10305527083251 2021 35.378596828269885 2022 33.328034274062006 2023 32.27780475579403