Year Percent of GDP 1980 31.68 1981 34.053 1982 37.789 1983 42.842 1984 44.894 1985 41.243 1986 38.381 1987 36.075 1988 40.79 1989 43.589 1990 43.719 1991 44.687 1992 46.716 1993 43.943 1994 48.133 1995 50.276 1996 49.451 1997 53.464 1998 53.127 1999 49.691 2000 45.706 2001 41.619 2002 38.968 2003 40.493 2004 41.312 2005 43.446 2006 47.479 2007 49.223 2008 45.012 2009 44.639 2010 51.68 2011 48.621 2012 46.767 2013 46.286 2014 47.971 2015 43.524 2016 44.557 2017 44.474 2018 44.697 2019 44.449 2020 43.949 2021 43.444 2022 42.976 2023 42.436 2024 41.876