Year Percent of GDP 1980 22.318 1981 22.318 1982 22.318 1983 22.318 1984 13.585 1985 12.257 1986 11.551 1987 9.868 1988 11.614 1989 11.708 1990 11.937 1991 11.219 1992 17.434 1993 14.853 1994 19.521 1995 15.528 1996 7.85 1997 10.894 1998 11.526 1999 8.888 2000 10.093 2001 10.053 2002 11.011 2003 10.305 2004 9.358 2005 9.309 2006 9.627 2007 11.171 2008 14.282 2009 12.401 2010 15.403 2011 14.899 2012 16.82 2013 20.358 2014 18.548 2015 18.623 2016 21.116 2017 21.528 2018 22.439 2019 22.673 2020 23.04 2021 23.373 2022 23.686 2023 24.096 2024 24.398