Year Percent of GDP 1980 28.419 1981 26.277 1982 28.75 1983 31.401 1984 28.978 1985 24.97 1986 30.151 1987 24.038 1988 25.644 1989 23.602 1990 19.852 1991 23.246 1992 25.415 1993 23.59 1994 27.724 1995 28.062 1996 23.908 1997 24.166 1998 24.326 1999 23.427 2000 22.608 2001 22.502 2002 22.546 2003 22.13 2004 19.978 2005 20.167 2006 19.271 2007 25.199 2008 25.098 2009 31.633 2010 27.082 2011 23.358 2012 22.019 2013 19.8 2014 21.792 2015 25.764 2016 27.143 2017 21.59 2018 22.648 2019 23.638 2020 23.05 2021 22.821 2022 22.582 2023 22.257 2024 22.333