Year Percent of GDP 1980 3.733 1981 7.091 1982 6.47 1983 5.789 1984 5.887 1985 5.499 1986 3.991 1987 5.082 1988 4.033 1989 4.565 1990 5.303 1991 4.87 1992 5.061 1993 5.278 1994 4.685 1995 6.904 1996 6.779 1997 6.921 1998 5.802 1999 5.304 2000 4.562 2001 11.173 2002 7.278 2003 10.039 2004 13.737 2005 13.193 2006 15.449 2007 12.623 2008 10.189 2009 12.564 2010 13.134 2011 13.006 2012 18.246 2013 14.04 2014 14.571 2015 13.442 2016 13.011 2017 19.934 2018 19.809 2019 19.999 2020 19.694 2021 19.016 2022 18.969 2023 18.67 2024 17.33