Year % of GNI 1990 11.5266472124625 1991 5.60768736230735 1992 7.28201916347951 1993 13.5696638435015 1994 14.8243048831219 1995 11.0345574356144 1996 9.38193661400884 1997 7.36914163963609 1998 14.6758205276949 1999 8.38423231487135 2000 7.54946855045942 2001 7.6869844072226 2002 9.57273714289813 2003 11.4201874817328 2004 10.6421583725202 2005 10.6768764594092 2006 11.0303316529024 2007 7.24007191999461 2008 7.99189192747836 2009 9.77872639442069 2010 6.54310275730967 2011 9.50695306264969 2012 5.08787121218457 2013 3.36423781153139 2014 0.976809752607939 2015 4.74728499464636 2016 5.63738850844367 2017 7.92434597768468 2018 8.00388809016406 2019 7.01860023442663 2020 1.23004822957273 2021 2.01511815707264