Year % of GNI 2002 41.8816788793479 2003 45.3945638960501 2004 52.040759514014 2005 52.8687977674638 2006 54.3585790644815 2007 59.4703918872223 2008 52.4543796938478 2009 51.6130014789356 2010 59.1453331174461 2011 63.2646776412056 2012 63.5404688327212 2013 64.3316429665794 2014 62.4913758831356 2015 54.4891023740656 2016 53.6390727187159 2017 56.5463822386023 2018 56.7954368511752 2019 54.1253614220156 2020 34.3057786829474 2021 31.3722481127637