Year Percent of GDP 1980 35.476 1981 33.544 1982 32.428 1983 32.381 1984 34.852 1985 39.536 1986 38.209 1987 37.78 1988 39.527 1989 37.511 1990 34.38 1991 35.674 1992 39.634 1993 43.963 1994 40.793 1995 39.556 1996 38.219 1997 36.197 1998 35.557 1999 34.865 2000 34.328 2001 36.296 2002 36.903 2003 40.369 2004 42.657 2005 40.982 2006 40.606 2007 41.239 2008 43.21 2009 46.335 2010 47.881 2011 48.006 2012 47.18 2013 47.251 2014 46.775 2015 44.748 2016 44.142 2017 44.643 2018 44.222 2019 43.034 2020 42.281 2021 41.759 2022 41.233 2023 40.618 2024 39.998