Year Percent of GDP 1980 20.204 1981 21.214 1982 20.508 1983 19.482 1984 20.594 1985 19.937 1986 18.681 1987 19.011 1988 20.489 1989 19.686 1990 17.893 1991 15.6 1992 14.751 1993 14.621 1994 17.123 1995 18.525 1996 19.311 1997 19.844 1998 19.652 1999 20.802 2000 23.106 2001 21.795 2002 21.381 2003 21.606 2004 23.647 2005 24.475 2006 24.955 2007 24.665 2008 24.173 2009 19.02 2010 19.879 2011 21.383 2012 21.277 2013 21.695 2014 22.474 2015 20.305 2016 19.68 2017 20.738 2018 20.378 2019 19.829 2020 20.47 2021 20.761 2022 20.89 2023 20.98 2024 21.356