Year Percent of GDP 1980 25.153 1981 22.748 1982 21.736 1983 20.912 1984 21.087 1985 21.105 1986 22.061 1987 21.787 1988 22.886 1989 23.817 1990 23.634 1991 23.116 1992 22.233 1993 20.237 1994 20.902 1995 20.971 1996 20.828 1997 23.169 1998 24.368 1999 25.797 2000 25.052 2001 25.058 2002 23.378 2003 22.703 2004 23.038 2005 22.894 2006 23.662 2007 24.233 2008 23.433 2009 20.783 2010 21.317 2011 22.361 2012 21.662 2013 21.777 2014 21.754 2015 22.344 2016 21.934 2017 22.886 2018 22.065 2019 22.202 2020 22.542 2021 22.729 2022 22.777 2023 22.665 2024 22.513