Year Percent of GDP 1980 30.955 1981 23.428 1982 28.539 1983 24.822 1984 21.669 1985 22.401 1986 18.278 1987 17.849 1988 21.39 1989 21.763 1990 26.92 1991 16.477 1992 13.362 1993 11.215 1994 20.721 1995 19.33 1996 18.792 1997 19.775 1998 21.05 1999 17.818 2000 18.811 2001 17.649 2002 18.445 2003 18.832 2004 14.813 2005 17.306 2006 17.672 2007 18.823 2008 17.947 2009 16.516 2010 15.913 2011 17.264 2012 17.276 2013 17.695 2014 18.26 2015 19.903 2016 19.066 2017 19.815 2018 19.82 2019 19.898 2020 19.912 2021 19.687 2022 19.604 2023 19.559 2024 19.529