Year Percent of GDP 1980 30.54 1981 29.012 1982 31.011 1983 23.558 1984 25.141 1985 24.057 1986 19.941 1987 20.654 1988 23.135 1989 21.818 1990 15.859 1991 13.662 1992 10.532 1993 10.463 1994 13.967 1995 13.945 1996 13.996 1997 16.08 1998 15.679 1999 16.466 2000 15.368 2001 15.111 2002 15.431 2003 16.362 2004 16.948 2005 17.765 2006 22.507 2007 23.755 2008 22.799 2009 19.703 2010 21.967 2011 22.614 2012 21.215 2013 20.914 2014 20.161 2015 18.969 2016 19.498 2017 19.719 2018 20.337 2019 21.316 2020 21.802 2021 22.596 2022 22.872 2023 23.21 2024 23.114