Year Percent of GDP 1980 31.224 1981 28.377 1982 28.654 1983 28.372 1984 27.208 1985 26.926 1986 26.036 1987 26.788 1988 29.09 1989 31.983 1990 30.119 1991 24.073 1992 21.052 1993 18.573 1994 19.754 1995 20.282 1996 20.184 1997 21.713 1998 22.977 1999 22.351 2000 23.845 2001 23.16 2002 22.035 2003 22.207 2004 22.867 2005 24.6 2006 23.984 2007 25.465 2008 25.067 2009 21.191 2010 21.6 2011 23.474 2012 22.492 2013 21.384 2014 20.917 2015 20.889 2016 22.019 2017 22.766 2018 22.998 2019 23.137 2020 23.14 2021 23.266 2022 23.267 2023 23.343 2024 23.495