Year % of GDP 2000 3.33441973 2001 3.75668859 2002 4.47671938 2003 5.44398975 2004 5.56991434 2005 5.59754324 2006 5.70635176 2007 5.43095398 2008 5.46596193 2009 5.79984474 2010 6.22109413 2011 6.580935 2012 6.86373377 2013 6.88127422 2014 6.83199883 2015 7.60513353 2016 7.41604376 2017 7.53717899 2018 7.82609653 2019 7.77070522 2020 8.35889626 2021 8.28661728