Year Percent of GDP 1988 37.536 1989 38.326 1990 42.834 1991 44.037 1992 46.481 1993 47.796 1994 46.017 1995 44.551 1996 44.989 1997 46.611 1998 45.29 1999 45.563 2000 44.174 2001 44.125 2002 43.791 2003 43.906 2004 43.342 2005 43.039 2006 44.106 2007 45.326 2008 45.199 2009 45.91 2010 45.679 2011 45.701 2012 47.869 2013 48.142 2014 47.857 2015 47.653 2016 46.515 2017 46.441 2018 46.368 2019 46.499 2020 46.525 2021 46.581 2022 46.664 2023 46.782 2024 46.899