Year Percent of GDP 1980 26.735 1981 25.674 1982 23.13 1983 19.631 1984 18.403 1985 20 1986 23.91 1987 24.912 1988 24.86 1989 23.061 1990 24.137 1991 22.96 1992 23.532 1993 26.204 1994 21.414 1995 24.049 1996 22.615 1997 23.012 1998 23.857 1999 21.342 2000 23.8 2001 18.135 2002 21.243 2003 22.474 2004 25.205 2005 27.034 2006 29.565 2007 28.714 2008 28.936 2009 23.018 2010 26.973 2011 31.269 2012 28.304 2013 29.773 2014 29.033 2015 28.362 2016 28.227 2017 30.97 2018 29.19 2019 24.467 2020 23.824 2021 23.173 2022 23.276 2023 23.36 2024 23.46