Year % of GDP 2000 0.6181033539947868 2001 0.6365981267749131 2002 0.6834854185814524 2003 0.7332451404655086 2004 0.7694539906970153 2005 0.8154504176926274 2006 0.8587216160522135 2007 0.8686612037496048 2008 0.9561912381083744 2009 1.0282499307221549 2010 1.1151601149493904 2011 1.1364481367433692 2012 1.2480142703276236 2013 1.215331081992021 2014 1.3622660490350655 2015 1.3723784715699068 2016 1.4141347897552998 2017 1.3626018884838489 2018 1.4490893717492992 2019 1.479897455969934 2020 1.6708825870700497 2021 1.9757055349711738