Year % of GNI 1970 0 1971 0 1972 0 1973 0 1974 0 1975 0 1976 0 1977 0 1978 0 1979 0 1980 0 1981 0 2009 0 2010 0 2011 0 2012 0 2013 0.00177093831222931 2014 0.00229778372824261 2015 0.00151223783928092 2016 0.00213657077135641 2017 0 2018 0 2019 0 2020 0 2021 0