Year Percent of GDP 1980 22.388 1981 25.296 1982 19.924 1983 20.222 1984 20.961 1985 21.534 1986 21.681 1987 22.178 1988 23.506 1989 23.61 1990 21.305 1991 19.342 1992 18.378 1993 18.475 1994 19.516 1995 19.381 1996 18.928 1997 21.218 1998 21.045 1999 20.684 2000 20.615 2001 19.671 2002 19.739 2003 20.467 2004 21.383 2005 22.632 2006 23.596 2007 23.908 2008 24.072 2009 21.959 2010 23.482 2011 24.151 2012 24.868 2013 24.908 2014 24.869 2015 23.848 2016 22.879 2017 23.546 2018 23.024 2019 22.916 2020 23.291 2021 23.347 2022 23.489 2023 23.633 2024 23.796