Year Percent of GDP 1980 30.432 1981 28.024 1982 26.014 1983 26.789 1984 31.868 1985 31.733 1986 24.115 1987 24.526 1988 20.168 1989 20.33 1990 26.278 1991 34.533 1992 30.221 1993 25.65 1994 25.151 1995 24.852 1996 29.131 1997 29.601 1998 25.258 1999 28.758 2000 41.713 2001 39.65 2002 38.484 2003 43.316 2004 46.333 2005 51.861 2006 54.575 2007 56.964 2008 57.494 2009 47.259 2010 49.869 2011 48.46 2012 47.18 2013 45.376 2014 43.098 2015 36.416 2016 37.416 2017 37.75 2018 39.777 2019 30.634 2020 28.837 2021 28.139 2022 29.335 2023 28.621 2024 24.722