Year % of GNI 2010 32.4398310581785 2011 30.4625834732742 2012 32.6361218085938 2013 33.2216934454242 2014 33.1278837241182 2015 33.2445429855004 2016 33.1397980052804 2017 33.906095114631 2018 34.2277480672305 2019 33.1149437458212 2020 33.186038481621 2021 36.5668805248619