Year % of GDP 1993 8.617224497306017 1994 8.853806046485241 1995 9.145566841838443 1996 10.095329438846258 1997 11.639467378342207 1998 12.661155743359757 1999 13.196959810942172 2000 16.010851765659943 2001 16.769452326685773 2002 17.608154000523154 2003 18.20426908962428 2004 18.78279269865066 2005 17.80466650374705 2006 18.564593494001226 2007 17.33274648397348 2008 15.347401768300928 2009 14.417177850087324 2010 14.69387985732403 2011 15.17259358177386 2012 15.08786435706861 2013 15.490579017104194 2014 15.397566828917936 2015 16.01377197246222 2016 15.995185589362157 2017 16.188573569626396 2018 16.34941360415431 2019 16.276776266732533 2020 16.203659031424795 2021 17.86494001306858 2022 18.81783822695872 2023 18.303071864981238