Year Percent of GDP 1980 23.297 1981 22.528 1982 21.601 1983 25.423 1984 23.277 1985 22.961 1986 18.579 1987 23.847 1988 19.286 1989 18.423 1990 18.365 1991 16.866 1992 14.928 1993 16.199 1994 16.793 1995 20.516 1996 20.952 1997 21.058 1998 20.65 1999 20.242 2000 20.306 2001 18.521 2002 18.98 2003 20.332 2004 21.403 2005 20.767 2006 22.446 2007 22.168 2008 22.582 2009 22.006 2010 22.295 2011 22.221 2012 22.331 2013 20.001 2014 20.012 2015 20.672 2016 21.518 2017 21.282 2018 21.193 2019 21.264 2020 20.67 2021 20.254 2022 19.702 2023 19.252 2024 18.794