Year % of GDP 1992 11.081365740344424 1993 17.517329020918275 1994 11.3241649294688 1995 9.77395635608051 1996 9.602347816141512 1997 10.572433151475947 1998 8.358672087334124 1999 9.805817877621157 2000 13.910160696328175 2001 14.662059187238668 2002 13.369240222564315 2003 18.038745571348144 2006 28.70997467868736 2007 23.47917647854189 2008 21.65181536039009 2009 16.540294403425477 2010 19.593119250577384 2011 18.466991091550952 2012 15.312142183817487 2013 15.731208036978506 2014 12.901634244678807 2015 11.894137923062468 2016 11.350993451541882 2017 13.546908446892273 2018 16.68852831419834 2019 16.850520916518676 2020 14.145787232581203 2021 16.908849519202867