Year % of GNI 1974 40.8547008361419 1975 44.6479981753664 1976 40.6986668105627 1977 44.0843395718597 1978 28.4218725353952 1979 42.1890145339673 1980 40.386373993812 1981 43.4285931897697 1982 33.9083182970401 1983 33.6733193522523 1984 34.213578421225 1985 28.6742621828277 1986 17.9925966766208 1987 28.9222003678747 1988 22.2587401321089 1989 27.0570764668986 1990 22.4766694106801 1991 14.266886799198 1992 13.1489555924067 1993 8.78268328723808 1994 11.0012804346678 1995 10.2340201093953 1996 16.0983866051036 1997 16.795525855464 1998 12.6238441296755 1999 19.7064860838937 2000 32.8308599339246 2001 28.5507554018409 2002 28.8253728557941 2003 30.6969770562379 2004 31.9647241110517 2005 39.3876270807425 2006 43.1511296859815 2007 40.7138856235603 2008 46.8631652075993 2009 28.9157999675288 2010 42.3279171783038 2011 41.4169632854489 2012 41.3054048882099 2013 39.5770119149038 2014 35.1107522326944 2015 23.1245513585967 2016 19.9352151781583 2017 21.0904075470182 2018 28.8768284984218 2019 23.9016663290113 2020 12.2518534699961 2021 18.825744061281