Year Percent of GDP 1980 25.526 1981 26.988 1982 24.423 1983 23.974 1984 22.433 1985 28.55 1986 26.028 1987 26.813 1988 27.229 1989 20.877 1990 26.302 1991 23.385 1992 17.205 1993 18.884 1994 17.439 1995 17.581 1996 13.519 1997 14.267 1998 13.814 1999 16.317 2000 18.054 2001 19.403 2002 16.437 2003 16.878 2004 17.517 2005 18.215 2006 18.634 2007 20.457 2008 19.613 2009 19.333 2010 20.735 2011 21.703 2012 21.476 2013 20.106 2014 22.432 2015 21.466 2016 16.199 2017 16.208 2018 17.162 2019 18.962 2020 19.712 2021 20.111 2022 20.016 2023 19.891 2024 19.912