Year % of GDP 2000 1.0465716628451958 2001 1.0446228315955122 2002 1.1551536485091953 2003 1.2744739362458852 2004 1.2986697865164578 2005 1.3508918572848532 2006 1.3950221659630322 2007 1.4525621077045567 2008 1.6760081797189608 2009 2.0137019632051576 2010 2.0035404179315672 2011 2.1237319146984888 2012 2.3204482965433653 2013 2.455718291322258 2014 2.5820539609973747 2015 2.7599872737174533 2016 2.7008924837775434 2017 2.683878790361227 2018 2.7341361419048287 2019 2.7963119686977316 2020 2.9159157681697274 2021 2.8428177993991866