Year % of GDP 1995 2.5506335784128704 1996 2.564864766218754 1997 2.5265505759685487 1998 2.4045647028855752 1999 2.2549954095791094 2000 2.203793407337423 2001 2.2295268395633134 2002 2.0719117563727947 2003 2.003328065149209 2004 2.0133061195891244 2005 1.7690806404496935 2006 1.6728145796179972 2007 1.7071085823763796 2008 1.661223604337298 2009 1.5192081714700152 2010 1.6467894433333783 2011 1.7179046805141331 2012 1.6983751177909783 2013 1.7434398134725007 2014 1.7076657241986135 2015 1.6387696373214313 2016 1.5937254290005716 2017 1.6996969663127346 2018 1.6161840112639732 2019 1.5898278862138582 2020 1.6308121588440856 2021 1.6018176610809083 2022 1.7006539815987751 2023 1.6846020309803362