Year Percent of GDP 1980 28.783 1981 28.831 1982 25.627 1983 21.442 1984 22.932 1985 21.984 1986 25.023 1987 25.058 1988 24.366 1989 23.844 1990 22.865 1991 19.109 1992 18.493 1993 19.669 1994 24.414 1995 22.021 1996 22.129 1997 22.918 1998 20.112 1999 18.971 2000 17.339 2001 17.968 2002 18.1 2003 20.627 2004 20.068 2005 20.903 2006 21.95 2007 21.325 2008 21.981 2009 18.72 2010 23.8 2011 24.577 2012 21.302 2013 22.331 2014 22.542 2015 20.848 2016 19.724 2017 21.194 2018 22.122 2019 23.268 2020 23.94 2021 24.883 2022 25.698 2023 26.618 2024 27.211