Year % of GDP 2000 5.0130831173584225 2001 5.035921441966222 2002 4.891096933621453 2003 4.971479971888239 2004 4.943173614228115 2005 4.950409470493455 2006 4.886240292098442 2007 4.803040837393691 2008 4.833348286254981 2009 5.149479694678163 2010 4.98838350758198 2011 4.9847381866524385 2012 5.032085962258753 2013 5.110146334556338 2014 5.14091112570666 2015 5.240018750818329 2016 5.252118114712458 2017 5.259151793042828 2018 5.2011610048977515 2019 5.258620356532631 2020 5.535648081794923 2021 5.437627642073271