Year Percent of GDP 1980 21.778 1981 20.92 1982 18.802 1983 16.981 1984 20.182 1985 18.376 1986 17.653 1987 20.219 1988 25.137 1989 25.235 1990 22.875 1991 18.189 1992 19.124 1993 20.897 1994 21.606 1995 20.63 1996 21.475 1997 21.8 1998 21.567 1999 20.598 2000 21.278 2001 21.237 2002 21.52 2003 21.464 2004 21.075 2005 21.805 2006 21.24 2007 21.332 2008 24.095 2009 22.158 2010 23.109 2011 23.792 2012 23.922 2013 23.765 2014 23.278 2015 21.561 2016 20.852 2017 22.03 2018 21.644 2019 21.514 2020 21.443 2021 21.548 2022 21.352 2023 21.303 2024 21.243