Year Percent of GDP 1980 21.236 1981 21.236 1982 21.236 1983 21.236 1984 21.236 1985 21.236 1986 21.236 1987 16.82 1988 16.599 1989 26.115 1990 26.267 1991 26.551 1992 25.194 1993 20.83 1994 23.392 1995 24.741 1996 27.296 1997 29.919 1998 32.221 1999 28.738 2000 30.395 2001 27.11 2002 23.882 2003 24.11 2004 23.081 2005 27.536 2006 33.04 2007 30.69 2008 29.074 2009 27.855 2010 27.466 2011 29.986 2012 31.345 2013 29.744 2014 34.826 2015 25.948 2016 25.554 2017 27.129 2018 26.669 2019 24.316 2020 23.51 2021 23.282 2022 23.08 2023 22.913 2024 22.676