Year Percent of GDP 1980 20.926 1981 20.172 1982 20.706 1983 21.637 1984 27.545 1985 21.453 1986 19.46 1987 17.718 1988 19.689 1989 19.445 1990 15.684 1991 19.986 1992 22.964 1993 25.055 1994 20.357 1995 20.286 1996 18.571 1997 18.778 1998 22.949 1999 21.514 2000 19.317 2001 19.623 2002 19.693 2003 19.493 2004 19.865 2005 20.175 2006 22.215 2007 26.473 2008 27.296 2009 31.715 2010 30.926 2011 26.971 2012 26.542 2013 26.47 2014 28.751 2015 35.127 2016 30.933 2017 28.862 2018 25.882 2019 27.124 2020 27.543 2021 27.763 2022 27.743 2023 27.184 2024 26.972