Year Percent of GDP 1995 45.118 1996 51.252 1997 60.547 1998 66.091 1999 69.483 2000 64.154 2001 70.121 2002 64.877 2003 68.659 2004 71.09 2005 70.036 2006 64.478 2007 62.26 2008 62.607 2009 67.649 2010 67.461 2011 70.173 2012 67.729 2013 68.364 2014 63.372 2015 57.92 2016 55.447 2017 50.205 2018 45.369 2019 42.458 2020 39.074 2021 35.67 2022 32.123 2023 30.029 2024 28.206