Year % of GNI 1982 11.874379514924426 1983 11.333708055484749 1984 10.21782558031199 1985 10.249686564932038 1986 11.845925416985802 1987 9.020579401737258 1988 8.433664973200143 1989 10.408570506019736 2005 21.533782640092323 2006 21.260620115017716 2007 22.409474191385886 2008 19.49405803268398 2009 14.860522148032105 2010 18.83255902702433 2011 19.937443799755542 2012 15.845107271531896 2013 15.155250275133108 2014 17.320956108797326 2015 13.491340320195318 2016 16.094282809146954 2017 20.07798647394353 2018 19.45450372747933 2019 19.82072524876635 2020 18.50683446427122 2021 19.35519792578303 2022 17.034594554159074