Year % of GNI 2008 10.6440986406964 2009 11.1969170886065 2010 11.6163196176374 2011 11.6091977323807 2012 11.5817670414202 2013 11.6851505345022 2014 11.8307083549348 2015 12.1626149415041 2016 12.1968462699759 2017 12.1875039961508 2018 12.3455344008088 2019 12.1838637734873 2020 12.5658732335262 2021 12.9571751504623