Year % of GNI 2007 10.3377597024194 2008 9.25732346508171 2009 14.9555011975994 2010 14.1793138497091 2011 10.7351161602561 2012 11.2948187487819 2013 14.4921413847477 2014 13.6258934329966 2015 17.1168176076313 2016 17.2848646677153 2017 16.6111309723614 2018 19.6854890560424 2019 19.3272886621095 2020 21.2461528539912 2021 22.0786745762278