Year Percent of GDP 1986 42.196 1987 37.253 1988 37.855 1989 37.966 1990 35.337 1991 38.006 1992 43.02 1993 38.417 1994 35.389 1995 37.446 1996 38.412 1997 38.744 1998 38.312 1999 39.522 2000 39.429 2001 39.325 2002 40.378 2003 40.901 2004 39.87 2005 40.483 2006 40.914 2007 41.478 2008 41.57 2009 40.418 2010 40.647 2011 42.634 2012 42.868 2013 45.097 2014 44.601 2015 43.797 2016 42.841 2017 42.705 2018 43.023 2019 43.217 2020 43.345 2021 43.842 2022 43.456 2023 43.512 2024 43.543