Year Percent of GDP 1980 12.61 1981 16.84 1982 15.016 1983 15.536 1984 15.381 1985 14.696 1986 15.171 1987 14.492 1988 12.254 1989 9.6 1990 10.582 1991 9.745 1992 7.548 1993 8.541 1994 7.879 1995 8.247 1996 9.085 1997 9.68 1998 9.424 1999 9.677 2000 19.061 2001 23.431 2002 22.011 2003 19.962 2004 25.476 2005 20.414 2006 17.887 2007 14.993 2008 25.875 2009 29.057 2010 27.995 2011 27.95 2012 27.879 2013 28.318 2014 29.318 2015 27.684 2016 28.37 2017 28.126 2018 30.116 2019 30.13 2020 30.46 2021 30.692 2022 31.181 2023 31.851 2024 32.578