Year % of GDP 1993 57.15359337469239 1994 58.47020282367809 1995 57.253361482686415 1996 60.55571344249393 1997 61.74533202868873 1998 62.52226221463888 1999 63.357753428131716 2000 63.87781621280894 2001 63.87829463046465 2002 65.74534326486808 2003 65.61752768544196 2004 64.24169813108578 2005 64.46658174776803 2006 64.65838620183186 2007 64.75082201185143 2008 66.46628783169783 2009 68.13906095556533 2010 66.54160677526781 2011 65.8655341895153 2012 65.44684451871434 2013 64.27173876611624 2014 63.637141895437 2015 61.843900951811705 2016 61.245559988074795 2017 59.776625638184186 2018 59.24920002505857 2019 59.810901364791015 2020 59.739604093286594 2021 58.22355160280497 2022 58.328488843059475 2023 60.13891147824803