Year Percent of GDP 1980 15.307 1981 13.439 1982 15.989 1983 15.847 1984 15.516 1985 14.644 1986 14.749 1987 16.031 1988 15.547 1989 16.568 1990 19.346 1991 18.808 1992 16.73 1993 18.873 1994 19.103 1995 20.9 1996 22.778 1997 24.415 1998 24.872 1999 24.912 2000 25.358 2001 24.414 2002 24.308 2003 26.228 2004 27.002 2005 27.045 2006 26.732 2007 22.619 2008 18.142 2009 15.522 2010 15.997 2011 15.744 2012 16.886 2013 20.275 2014 23.28 2015 29.017 2016 33.711 2017 33.206 2018 34.538 2019 33.992 2020 33.488 2021 33.127 2022 32.827 2023 32.485 2024 32.09