Year % of GDP 1990 17.7278129354272 1991 8.68334132986675 1993 41.0109886740765 1994 44.5967524687686 1995 26.0039043047449 1996 26.0389631948694 1997 18.4331495362395 1998 5.26124571558297 1999 17.3919391279831 2000 35.0771900902615 2001 27.9091787893391 2002 25.8803395854058 2003 26.088568051437 2004 28.7444372660525 2005 38.5912506202751 2006 41.4702603073283 2007 39.1423596411944 2008 43.040682245059 2009 29.639296394547 2010 27.8844974121657 2011 32.878647863762 2012 29.0119697503912 2013 25.5323883349298 2014 22.5181229967843 2015 14.4439997922585 2016 14.7854023448198 2017 19.6746501247433 2018 27.6209320144449 2019 23.4349054129318 2020 13.0027347945894 2021 29.9383945565987