Year % of GNI 1990 1.00019112570813 1991 0.962664256796766 1992 1.23799458350315 1993 1.01272221109327 1994 0.933870719475163 1995 1.04865158885624 1996 1.04009490346745 1997 1.17082045410743 1998 1.03664016365043 1999 1.36738793073292 2000 1.436610988752 2001 1.1015734658959 2002 1.42900047538122 2003 1.09537377381999 2004 1.38705494638522 2005 1.47922768996627 2006 1.39040019348416 2007 1.41112176199942 2008 1.17348645788965 2009 1.20251130207211 2010 1.20492043792162 2011 1.21493808401828 2012 1.35499441443104 2013 1.24612061945166 2014 1.38017489071263 2015 1.26129888518391 2016 1.56981599772762 2017 1.58945592046995 2018 1.71101833539383 2019 1.70397579130898 2020 1.78844895881155 2021 1.96531586656908