Year % of GNI 2005 8.98623160595237 2006 11.1929208759532 2007 13.1927140062235 2008 14.4445307594617 2009 12.0844220612406 2010 12.8171854439584 2011 14.2551909486067 2012 11.3684243399908 2013 12.3934378571071 2014 10.6862233332904 2015 12.8853065622104 2016 8.32952690362065 2017 12.948454376075 2018 13.1852689789295 2019 19.2325307701414 2020 16.7396420789434 2021 15.2120251595569