Year % of GDP 1995 59.2905581637976 1996 61.232423471336915 1997 62.12383893819534 1998 62.00183494398809 1999 62.634130431559754 2000 63.83698761361314 2001 64.60933941357409 2002 66.51498250461086 2003 65.01950063270819 2004 64.42533472083645 2005 63.08562082925303 2006 62.114432815207344 2007 60.40944566268185 2008 61.95083740999136 2009 61.67052349629197 2010 62.13266051668749 2011 61.47778025940356 2012 61.61865001094411 2013 61.09435712331439 2014 60.27013581472369 2015 58.91482264657034 2016 58.830026899344645 2017 59.45468868677231 2018 58.85367828729381 2019 57.779533422008896 2020 56.52953023349726 2021 56.1877732012517 2022 57.85446718776323 2023 57.22752487656654