Year % of GDP 1990 30.013533834586465 1991 23.235640495867766 1992 27.92132838948896 1993 23.833768257998166 1994 18.908262142857144 1995 18.662302662202553 1996 18.529703760378894 1997 17.92824121065301 1998 17.16404336653843 1999 16.722513566252893 2000 8.968573795677388 2001 8.964590935564773 2002 8.436041317807573 2003 8.93134941606437 2004 7.685212225680768 2005 9.6933995143412 2006 10.215924023414168 2007 10.200622705416357 2008 9.771987755790692 2009 8.827076228468341 2010 9.865628773187956 2011 11.410081303615362 2012 10.238631420839377 2013 9.914104855436738 2014 10.951403537699642 2015 11.76035952869109 2016 12.288939886851773 2017 12.602530957473313 2018 13.34739543455827 2019 13.394149993575704 2020 13.297274683241692 2021 13.48326467382736 2022 12.629289253070134 2023 12.385633783045904