Year % of GDP 1996 1.6517924276627476 1997 1.6359528116935278 1998 1.6043916775701061 1999 1.6969425097378745 2000 1.681826892090512 2001 1.718217625400177 2002 1.6948881083597094 2003 1.719280534241225 2004 1.6947098146039177 2005 1.6492404307299475 2006 1.6574522559883418 2007 1.658586873417689 2008 1.72074582035765 2009 1.8113206964074906 2010 1.7741066171711448 2011 1.7806753672402833 2012 1.825292291744078 2013 1.806431142822413 2014 1.9274441089208183 2015 1.997337920742794 2016 1.9850702265782023 2017 2.0396988452616127 2018 2.0782800429101003 2019 2.136151067160295 2020 2.205558631134273 2021 2.202867593879155