Year % of GNI 1991 2.8599829275038 1992 2.97301609421123 1993 2.76310933626215 1994 2.71053630255054 1995 2.67950679504603 1996 2.34305544303413 1997 2.13839935139028 1998 2.02923108765094 1999 1.90560254670242 2000 1.96767194369693 2001 1.91654228336478 2002 2.05521180744053 2003 1.8011618554082 2004 1.69606851015632 2005 1.70196043378358 2006 1.70103833690245 2007 1.5803059822647 2008 1.56287000130169 2009 1.48951031666746 2010 1.46021791911993 2011 1.3705188752265 2012 1.30770084793961 2013 1.24684022771529 2014 1.20974983250451 2015 1.17233015258784 2016 1.14599009236033 2017 1.12694090601 2018 1.09971450119078 2019 1.0990868711842 2020 1.12333805588185 2021 1.10123479106849