Year % of GNI 1990 1.39281398191902 1991 1.3247377279964 1992 1.32039673825245 1993 1.19200983346785 1994 1.11934943162039 1995 1.01323126874083 1996 0.929331839057206 1997 0.937068589105675 1998 0.949162175900975 1999 0.914495145880607 2000 0.898814629987167 2001 0.850369679211386 2002 0.797909773714833 2003 0.761474526328804 2004 0.697471499381089 2005 0.64120991623476 2006 0.598135550129773 2007 0.559674609514611 2008 0.540980661844849 2009 0.513924207308855 2010 0.483410960768543 2011 0.446251356189622 2012 0.44171490595941 2013 0.440664403992903 2014 0.444811673769859 2015 0.42854293499005 2016 0.40918220082865 2017 0.402238260663025 2018 0.389944084519985 2019 0.388206498363921 2020 0.400312126449239