Year Percent of GDP 1992 46.956 1993 47.932 1994 51.569 1995 52.394 1996 52.874 1997 58.747 1998 39.767 1999 35.53 2000 40.141 2001 44.657 2002 47.239 2003 48.916 2004 48.588 2005 48.072 2006 53.759 2007 50.271 2008 51.416 2009 55.793 2010 56.158 2011 52.692 2012 51.621 2013 49.664 2014 48.214 2015 46.205 2016 47.465 2017 48.177 2018 49.672 2019 50.221 2020 50.427 2021 50.434 2022 50.365 2023 50.164 2024 50.053