Year Percent of GDP 1980 22.053 1981 23.195 1982 21.706 1983 19.721 1984 21.834 1985 20.302 1986 18.877 1987 19.543 1988 20.561 1989 19.672 1990 18.671 1991 18.729 1992 17.6 1993 16.963 1994 17.772 1995 18.669 1996 19.557 1997 20.758 1998 21.302 1999 20.874 2000 20.749 2001 19.627 2002 18.32 2003 17.382 2004 17.72 2005 18.147 2006 19.24 2007 17.552 2008 15.233 2009 13.899 2010 15.423 2011 16.451 2012 18.744 2013 19.173 2014 20.341 2015 20.112 2016 18.616 2017 18.895 2018 19.003 2019 19.157 2020 18.923 2021 18.968 2022 19.099 2023 19.316 2024 19.604