Year % of GNI 1992 3.14796624387691 1993 5.10252255303048 1994 4.54276479673237 1995 8.26336140433452 1996 7.64434030927951 1997 7.26940608451126 1998 1.39046257370085 1999 2.02424246600892 2000 9.73937655815434 2001 17.2189767061747 2002 14.1433694090679 2003 15.2276306498134 2004 12.2834312802754 2005 9.80216071891252 2006 14.5572373519477 2007 12.0133811350554 2008 16.2753338268482 2009 9.1378461343451 2010 6.00105803419677 2011 7.71333296314229 2012 7.53015271315858 2013 7.28856912993282 2014 4.88837665581086 2015 2.91556133429393 2016 1.75021563421201 2017 3.32217396691367 2018 6.75288149255514 2019 4.16917666591547 2020 1.65179797036212 2021 8.43809016319972