Year % of GDP 2000 4.312801523549159 2001 4.34737241758738 2002 4.456862253991097 2003 4.672295326497794 2004 4.789727445579602 2005 4.709501963670017 2006 4.8415408316701 2007 4.8475380514882005 2008 5.005797577626686 2009 5.252418314164676 2010 5.214419385338691 2011 5.220558631077169 2012 5.231054381671986 2013 5.2957909015634 2014 5.229563359357795 2015 5.244015481245476 2016 5.406694740999649 2017 5.693009061584054 2018 5.635670814575182 2019 5.740380651692061 2020 6.656423507359393 2021 6.300225631516341