Year % of GNI 1989 2.6942392609791828 1990 2.8723767765067376 1991 2.3599269477555804 1992 2.2704426514717224 1993 1.6707481329289255 1994 1.8643859696238811 1995 1.8435728838232877 1996 2.145237125578124 1997 4.604385357963176 1998 3.096490350158553 1999 4.445762405756013 2000 8.480243751610022 2001 8.48673531453048 2002 12.15683558815266 2003 19.926337801541713 2004 21.91879138889952 2005 17.06095133849978 2006 20.39897981434201 2007 18.594449972772217 2008 15.021524622924447 2009 31.535185277596238 2010 29.514891237083603 2011 32.572624821952864 2012 28.246115852876475 2013 26.26043199891542 2014 28.22080759835584 2015 28.440194882226322 2016 30.11854082080328 2017 31.21807067050812 2018 30.609440964717717 2019 36.786641892642066 2020 41.96402319759606 2021 33.775678155867276 2022 20.940253685158307