Year Percent of GDP 1980 10.382 1981 10.382 1982 10.382 1983 10.382 1984 9.664 1985 9.664 1986 11.547 1987 12.574 1988 13.215 1989 13.289 1990 18.881 1991 16.088 1992 15.252 1993 15.594 1994 15.088 1995 15.376 1996 15.126 1997 15.252 1998 13.778 1999 14.318 2000 15.183 2001 12.249 2002 10.663 2003 15.655 2004 15.035 2005 12.732 2006 11.969 2007 8.527 2008 11.967 2009 6.285 2010 5.462 2011 9.089 2012 14.721 2013 11.584 2014 6.386 2015 7.256 2016 24.764 2017 11.935 2018 19.57 2019 15.883 2020 20.001 2021 17.731 2022 16.86 2023 15.059 2024 14.687