Year Percent of GDP 1980 21.711 1981 20.717 1982 22.886 1983 23.736 1984 24.419 1985 24.334 1986 24.804 1987 25.582 1988 23.861 1989 22.573 1990 24.864 1991 25.212 1992 25.896 1993 26.797 1994 28.052 1995 36.269 1996 36.925 1997 37.65 1998 38.881 1999 40.361 2000 42.363 2001 40.52 2002 39.773 2003 38.761 2004 38.787 2005 39.374 2006 39.171 2007 40.362 2008 40.669 2009 38.937 2010 41.281 2011 43.807 2012 46.202 2013 47.95 2014 46.227 2015 47.851 2016 49.513 2017 48.296 2018 48.973 2019 47.531 2020 46.014 2021 45.232 2022 44.385 2023 44.179 2024 44.026