Year Percent of GDP 1980 20.394 1981 22.214 1982 16.901 1983 16.122 1984 17.822 1985 19.32 1986 16.765 1987 20.583 1988 20.915 1989 25.582 1990 23.082 1991 23.943 1992 22.783 1993 23.307 1994 24.434 1995 23.905 1996 22.992 1997 24.959 1998 17.022 1999 12.485 2000 24.905 2001 24.677 2002 23.355 2003 26.71 2004 23.999 2005 23.574 2006 25.762 2007 24.358 2008 33.02 2009 33.013 2010 33.582 2011 33.173 2012 32.415 2013 30.656 2014 31.513 2015 32.028 2016 32.04 2017 32.122 2018 31.427 2019 31.872 2020 32.06 2021 32.235 2022 32.413 2023 32.711 2024 32.876