Year Percent of GDP 1980 13.164 1981 26.733 1982 11.798 1983 24.024 1984 14.114 1985 13.842 1986 11.795 1987 15.432 1988 14.044 1989 13.204 1990 18.316 1991 11.433 1992 18.537 1993 17.381 1994 19.508 1995 6.648 1996 4.897 1997 -2.395 1998 9.507 1999 8.606 2000 9.861 2001 13.177 2002 11.666 2003 8.748 2004 5.178 2005 2.881 2006 4.084 2007 6.22 2008 3.859 2009 5.511 2010 14.977 2011 8.852 2012 11.286 2013 13.407 2014 12.212 2015 18.187 2016 14.632 2017 17.506 2018 13.314 2019 13.749 2020 14.248 2021 14.647 2022 15.05 2023 15.617 2024 15.987