Year % of GDP 1990 60.23713070296536 1991 59.696633603834584 1992 60.423803680056096 1993 57.731766421161105 1994 59.146153797957744 1995 58.96187158777032 1996 57.95295279817271 1997 58.202085898865064 1998 58.91234350566798 1999 59.94715461408067 2000 60.0251536502446 2001 60.49249377236252 2002 60.68804133449795 2003 60.59475451191646 2004 60.13220315982449 2005 59.6945932965141 2006 58.60650014347194 2007 57.76560711021058 2008 57.3162692642556 2009 58.106036415030005 2010 56.99696827296972 2011 56.72949474520286 2012 56.84175373060049 2013 56.36126631778785 2014 56.232985803577115 2015 56.935462229752595 2016 58.00441512635188 2017 57.70613771968455 2018 57.82089359838315 2019 58.502055553220366 2020 58.401091133787 2021 57.22231417578182 2022 57.03760746157434 2023 58.27794745070006