Year Percent of GDP 1980 42.519 1981 44.769 1982 43.05 1983 41.845 1984 42.25 1985 41.315 1986 41.294 1987 39.383 1988 37.127 1989 32.599 1990 28.623 1991 28.568 1992 33.36 1993 38.131 1994 40.945 1995 43.926 1996 44.032 1997 43.4 1998 41.183 1999 39.832 2000 37.007 2001 34.319 2002 34.404 2003 35.589 2004 38.594 2005 39.79 2006 40.71 2007 41.744 2008 49.688 2009 63.739 2010 75.236 2011 80.799 2012 84.088 2013 85.15 2014 87.014 2015 87.876 2016 87.909 2017 87.141 2018 86.857 2019 85.665 2020 84.421 2021 83.598 2022 82.643 2023 81.502 2024 80.329