Year % of GNI 1995 3.3369770082293613 1996 3.5208606426259905 1997 4.089400460191761 1998 4.60963837663561 1999 2.9532971640043453 2000 2.9132323294868723 2001 3.121621964479425 2002 2.917671711960125 2003 2.676433995781965 2004 3.193090997164643 2005 4.957085094940921 2006 5.687353179010818 2007 6.825836872782896 2008 7.772836829619155 2009 6.005730626041302 2010 5.224686362754454 2011 5.998899712988308 2012 6.143572376256909 2013 7.261113466383749 2014 8.202362255714908 2015 9.458825437073436 2016 8.66074720213873 2017 8.822915750508498 2018 9.156734932254716 2019 9.774340028411535 2020 9.235502862041546 2021 9.246733432985488