Year % of GDP 1995 58.034314933540074 1996 59.392185820093026 1997 59.536120999231954 1998 59.53541859298601 1999 59.85579081951641 2000 60.185267553895486 2001 60.56865528674427 2002 61.023103142197144 2003 60.270577781052516 2004 59.97382402538184 2005 59.60250939944446 2006 58.62082433192257 2007 57.91934340527119 2008 58.19173181307605 2009 58.48944499568552 2010 58.68348402253564 2011 58.334969243947945 2012 58.81297696938028 2013 57.935325010873626 2014 57.099659495163216 2015 56.15867255989806 2016 56.337802724436536 2017 56.62069073440718 2018 56.35506457004473 2019 55.64707751204045 2020 54.8246993784827 2021 54.58318529749832 2022 56.350264106607106 2023 55.74391215267804