Year % of GNI 1990 0.899472650706913 1991 0.737939507737599 1992 0.64393185317593 1993 0.66143753042321 1994 0.645839759046554 1995 0.681143701882455 1996 0.731551556089823 1997 0.728456118461291 1998 0.77902876588542 1999 0.864918585224977 2000 0.887435875993036 2001 0.931486833833473 2002 2.55201409240637 2003 2.190659000838 2004 2.13115157269189 2005 1.92822848289358 2006 1.68909620398757 2007 1.49749033726097 2008 1.27279581740565 2009 1.33978143112136 2010 1.16787431954557 2011 1.02306573975334 2012 1.03723500072162 2013 1.09659075779391 2014 1.1730145413885 2015 1.10553903942945 2016 1.20633686543403 2017 1.06977448340199 2018 1.36945334692393 2019 1.59355349987407 2020 1.7000323641686 2021 1.57478771179578