Year % of GDP 1996 1.74299001693726 1997 1.80971002578735 1998 1.838250041008 1999 1.90565001964569 2000 1.93619000911713 2001 2.03278994560242 2002 1.90324997901917 2003 1.8411899805069 2004 1.82050001621246 2005 1.79060995578766 2006 1.8226900100708 2007 1.84999001026154 2008 1.93684005737305 2009 1.99860000610352 2010 2.06188011169434 2011 2.17332005500793 2012 2.28114008903503 2013 2.33072996139526 2014 2.37001991271973 2015 2.42816996574402 2016 2.52338004112244 2017 2.66666007041931 2018 2.86017990112305 2019 3.15659999847412 2020 3.39697003364563 2021 3.42979001998901