Year % of GDP 2000 0.403626442484974 2001 0.349604288511654 2002 0.385732111728361 2003 0.520108397399869 2004 0.622292237260218 2005 0.379311342594909 2006 0.432161173947835 2007 0.523233640129672 2008 0.716729446292106 2009 0.580672828360474 2010 0.451293701527894 2011 0.492057560509685 2012 0.350105121172429 2013 0.252434881687879 2014 0.352628237798714 2015 0.237870430604039 2016 0.25645274045942 2017 0.296486066723656 2018 0.1346177163712 2019 0.090024174483862 2020 0.108018026278521 2021 0.0537192368212247