Year % of GNI 1990 1.28557628904694 1991 1.29878417531265 1992 1.32250286171493 1993 1.35790566296707 1994 1.39313251285232 1995 1.43454078348303 1996 1.55858292941764 1997 2.02187927257721 1998 2.45654680205429 1999 2.36789975856915 2000 2.46424243454121 2001 2.87387551718849 2002 2.86538108916547 2003 2.7612598197156 2004 2.80396489779859 2005 2.80191960421022 2006 2.5254988931401 2007 2.27718987767382 2008 2.17545543072986 2009 2.23773417215413 2010 2.04952637197431 2011 1.92550018192207 2012 2.0531941788989 2013 2.14178753820878 2014 2.23785082874151 2015 2.41201845933118 2016 2.38469155942211 2017 2.22160930115794 2018 2.08849599049716 2019 2.07907406244265 2020 2.12561126405665 2021 2.25954495086022