Year % of GNI 1990 3.57551170069933 1991 4.82489526986069 1992 4.81934769031921 1993 2.36917666700533 1994 1.59981027711019 1995 1.21099196301265 1996 0.943947164602924 1997 1.0540961184658 1998 1.16848153425723 1999 1.60371889260051 2000 1.64128840047217 2001 1.54848416162468 2002 1.7000497206909 2003 1.48423211500437 2004 1.27502958439771 2005 1.14148747253595 2006 1.07378535324945 2007 0.97144023804729 2008 0.845781032292008 2009 0.983281104403709 2010 1.07702996021222 2011 1.12196763917705 2012 1.10782376950124 2013 1.104330257932 2014 1.21573115501979 2015 1.3943160166906 2016 1.33471041302214 2017 1.47357879686941 2018 1.32252269814187 2019 1.29578260354724 2020 1.30646648944084 2021 1.23603542858925