Year Percent of GDP 1980 21.401 1981 18.789 1982 17.89 1983 17.493 1984 16.818 1985 17.783 1986 16.725 1987 14.99 1988 16.056 1989 15.545 1990 15.958 1991 13.294 1992 12.8 1993 14.439 1994 14.425 1995 18.193 1996 15.518 1997 15.119 1998 14.607 1999 12.098 2000 12.833 2001 12.692 2002 18.235 2003 19.054 2004 19.35 2005 21.362 2006 21.471 2007 22.199 2008 21.065 2009 18.22 2010 17.323 2011 17.386 2012 16.133 2013 15.159 2014 15.634 2015 14.328 2016 16.34 2017 13.843 2018 15.42 2019 14.993 2020 12.587 2021 12.671 2022 12.638 2023 12.466 2024 12.058