Year % of GNI 1995 2.92929956539757 1996 2.34038694366961 1997 2.19602734387015 1998 2.06744464585961 1999 1.91765645841501 2000 1.6699332894592 2001 1.804479472780175 2002 2.254816494127846 2003 2.5172697220307416 2004 1.8987606354216962 2005 1.859234525518109 2006 2.1045907840668026 2007 1.82710771405856 2008 1.574987714437142 2009 1.688767018042465 2010 2.1622094060018977 2011 1.713675224651857 2012 1.7321677416419132 2013 1.7404305136966038 2014 1.7229078860210092 2015 1.7482569758059896 2016 1.9498916255272052 2017 1.7340705366157352 2018 1.5500756864321763 2019 1.4047234479044437 2020 1.7336190194165353 2021 1.3754345455551644