Year % of GNI 1990 9.4571693510541 1991 8.48937943692425 1992 8.33698179108442 1993 9.17765833097945 1994 9.12518048524276 1995 11.234904922549 1996 11.7841533900041 1997 11.7603783411401 1998 10.599303901973 1999 9.92815455716557 2000 9.07904955499746 2001 9.77014440176311 2002 9.30550863624279 2003 8.7309683661566 2004 8.87329557818715 2005 7.85302790067292 2006 8.21678224077833 2007 8.17637344813919 2008 6.12585890371492 2009 3.91716373943898 2010 3.17043801431127 2011 3.20036093028935 2012 2.42476057551486 2013 2.93140120443542 2014 3.84964927802266 2015 3.54206049265321 2016 5.40600336570835 2017 6.27685887739908 2018 6.88430211326387 2019 7.00257480585667 2020 5.48350854525662 2021 7.68568754530192