Year % of GDP 2005 0.0355600006878376 2006 0.0500999987125397 2007 0.0678199976682663 2008 0.062899999320507 2009 0.0562000013887882 2010 0.0442100018262863 2011 0.0489399991929531 2012 0.0454300008714199 2013 0.0391599982976913 2014 0.0294899996370077 2015 0.0306400004774332 2016 0.0231100004166365 2017 0.0295499991625547 2018 0.0293799992650747 2019 0.0264199990779161 2020 0.0488799996674061 2021 0.0586300007998943