Year % of GDP 1990 38.46302555011981 1991 62.53202323723461 1992 64.6732343167375 1993 60.51951024049151 1994 51.791986127259705 1995 46.77659301537091 1996 43.25802033461949 1997 42.62786071751432 1998 36.69543411411046 1999 33.59829241221128 2000 34.40592836003307 2001 23.90118812980596 2002 30.023563404215746 2003 35.827751196172244 2004 35.541979502697764 2005 31.246697093442226 2006 30.696189056844798 2007 30.817231787083678 2008 31.5378221113882 2009 30.432437430649735 2010 32.46444843296976 2011 32.8224368042315 2012 33.33792867511317 2013 33.61803640081364 2014 34.75833223353603 2015 33.222562477660674 2016 34.4469373609135 2017 33.28013939686702 2018 33.96875559464782 2019 32.67115006800665 2020 34.1198383133867 2021 35.043587772525804 2022 33.75552859211711