Year % of GDP 1999 3.59293007850647 2000 3.343394994735715 2001 3.4929651021957397 2002 3.1536499261856097 2004 3.27710998058319 2005 3.517155051231385 2006 3.69751000404358 2007 3.560179948806765 2008 3.7829999923706046 2009 3.96076011657715 2010 3.6558450460434 2011 3.76723003387451 2012 3.7124400138855 2013 3.76160001754761 2014 3.6956050395965603 2015 3.86400008201599 2016 3.82523989677429 2017 3.7605299949646 2018 3.681769967079165 2019 3.606734991073605 2020 4.00860977172852 2021 3.69673001766205 2022 3.54986000061035