Year % of GNI 1990 1.72400328094016 1991 2.24906019222499 1992 2.7424884935935 1993 4.75976364826172 1994 3.64373195118773 1995 3.14826489699379 1996 3.26623473297117 1997 3.12755057519959 1998 2.93267562678058 1999 2.66800505203557 2000 2.85077492560906 2001 2.87700931078143 2002 2.08916160958369 2003 2.18586848338972 2004 1.72941217162251 2005 1.41484819722551 2006 0.931263309788065 2007 0.784494982004692 2008 0.719592687842625 2009 0.758202622138806 2010 0.741115990255406 2011 0.723892928409619 2012 0.670693670904995 2013 0.707071588963296 2014 0.696621787742823 2015 0.780559885533017 2016 1.0051965800308 2017 1.11454197424137 2018 1.07022983310354 2019 1.08455510019945 2020 1.14150549020827 2021 1.23447087616223