Year % of GDP 1993 84.77080933008419 1994 88.33727537896534 1995 84.68612390183299 1996 80.21047081980663 1997 82.89798865826327 1998 84.05530376656522 1999 83.95088948865393 2000 73.96335692089269 2001 71.32625296434347 2002 66.20851440120671 2003 65.74244445758414 2004 65.14751970836511 2005 61.10549985320647 2006 55.902547151426894 2007 56.15533369640011 2008 54.60030596802605 2009 59.18574568251563 2010 56.19282687639262 2011 52.6670645627482 2012 56.45835417930388 2013 60.06994589417367 2014 59.1721806046824 2015 65.35054028881268 2016 66.17517029069971 2017 63.12392754965147 2018 60.41926205709947 2019 61.411017891004015 2020 65.74593903996977 2021 62.91063006802281 2022 60.22860164350819