Year % of GNI 1990 1.96778948540348 1991 1.88208555939252 1992 1.54516787385835 1993 1.78545645494601 1994 1.66266238273285 1995 1.66507561032526 1996 1.59522113383507 1997 1.66181101118246 1998 1.60029273793121 1999 1.71871247562393 2000 1.65436785493694 2001 1.86496462382253 2002 1.85633483779481 2003 2.18257004383667 2004 1.93890092777443 2005 1.88757583331191 2006 1.79502157822985 2007 1.51463777103112 2008 1.69371713650588 2009 1.71952222805577 2010 1.57146593984083 2011 1.5918391752145 2012 1.66439264751715 2013 1.6099774270947 2014 1.78210636490155 2015 1.90044164881289 2016 1.98432321377077 2017 2.07705664726427 2018 2.02416522191726 2019 2.25444950633771 2020 3.11320134767053 2021 4.39011211881137