Year Percent of GDP 1980 5.005 1981 6.009 1982 5.17 1983 5.427 1984 8.091 1985 5.916 1986 7.301 1987 5.564 1988 10.196 1989 8.191 1990 7.151 1991 4.951 1992 6.554 1993 7.484 1994 9.228 1995 13.486 1996 12.23 1997 10.034 1998 12.527 1999 7.396 2000 16.796 2001 19.7 2002 16.612 2003 18.023 2004 25.469 2005 17.14 2006 13.021 2007 21.857 2008 20.697 2009 15.356 2010 24.415 2011 33.06 2012 31.125 2013 28.059 2014 30.666 2015 32.367 2016 31.364 2017 29.182 2018 32.509 2019 31.489 2020 32.179 2021 32.386 2022 33.972 2023 34.074 2024 32.048