Year % of GDP 1990 18.339650982020633 1991 19.325963932543985 1992 10.610466484236795 1993 23.95972775872483 1994 34.00346872084315 1995 35.31169725046998 1996 22.564231137478004 1997 12.714520900481629 1998 10.67176902842893 1999 11.19380291234419 2000 36.01885218429335 2001 40.785135197912396 2002 44.13009567795591 2003 42.72174914257883 2004 37.97750911074621 2005 36.28374455162236 2006 43.28059539840785 2007 40.701981193799924 2008 35.40519899957177 2009 33.559422986003426 2010 37.474281569171204 2011 42.10768112355428 2012 47.79450529976072 2013 44.52987770366927 2014 37.52683189318597 2015 30.32020602192792 2016 34.77305533220476 2017 34.27219150135253 2018 32.65523791561322 2019 32.87684683857871 2020 23.371481046397964 2021 25.203621732329633 2022 21.431960043079794