Year Percent of GDP 1990 26.82 1991 25.969 1992 25.145 1993 23.766 1994 23.835 1995 25.874 1996 26.868 1997 25.91 1998 27.052 1999 26.026 2000 29.857 2001 23.076 2002 24.54 2003 30.956 2004 29.576 2005 31.904 2006 32.619 2007 35.862 2008 35.441 2009 35.599 2010 36.046 2011 30.819 2012 30.447 2013 30.032 2014 27.109 2015 44.29 2016 57.781 2017 55.783 2018 43.878 2019 39.067 2020 33.548 2021 30.983 2022 28.871 2023 28.227 2024 28.213