Year Percent of GDP 1980 39.095 1981 39.106 1982 38.496 1983 38.493 1984 40.921 1985 36.8 1986 37.055 1987 34.905 1988 37.586 1989 34.163 1990 32.631 1991 18.706 1992 11.04 1993 2.591 1994 8.151 1995 15.72 1996 10.712 1997 22.355 1998 16.012 1999 16.387 2000 16.064 2001 17.834 2002 20.037 2003 18.845 2004 19.299 2005 18.451 2006 16.939 2007 9.76 2008 14.99 2009 20.248 2010 20.845 2011 21.8 2012 21.089 2013 22.331 2014 22.783 2015 21.155 2016 21.729 2017 26.605 2018 23.19 2019 20.846 2020 19.951 2021 19.46 2022 19.251 2023 19.13 2024 19.183