Year % of GDP 1979 6.216110590504174 1980 9.502125783655382 1981 1.0222372662033914 1982 2.5687538401737484 1983 2.950807692144268 2005 0 2006 0 2007 0 2008 0 2009 0 2010 0 2011 0 2012 0 2013 0 2014 0 2015 0 2016 0 2017 0 2018 17.902415928874134 2019 16.74021025968802 2020 18.85021227154833 2021 17.63442291000369 2022 16.6514049549558 2023 14.85470627611093