Year % of GNI 1990 2.85026321925828 1991 3.50735923902985 1992 5.00298063114593 1993 4.82233335868803 1994 4.68919500123353 1995 4.7220951473856 1996 3.63983397542711 1997 3.86717253561533 1998 6.14125202487829 1999 6.14551693276392 2000 5.82659347261754 2001 5.79942367456111 2002 5.46671995921798 2003 4.96161602955472 2004 5.41691015696947 2005 6.13395320096518 2006 7.03066217950009 2007 8.50153498972796 2008 13.075884908953 2009 2.42917108726597 2010 2.47730906120216 2011 2.719394215565 2012 2.4475545644344 2013 2.30508491713562 2014 2.35105537285592 2015 2.45514972118724 2016 2.1982686643552 2017 2.4810749289854 2018 1.45033143183844 2019 2.23177479456426 2020 2.11257251577107 2021 1.80545468974183