Year % of GNI 1974 31.9126509494888 1975 37.2151988542443 1976 34.0295932824786 1977 37.4673084354997 1978 22.066129992686 1979 35.698614847739 1980 33.7515508032778 1981 37.0365118881265 1982 27.0378293131778 1983 26.6666732613816 1984 27.1420570810419 1985 21.7284196926051 1986 8.158522312132 1987 19.3188589764331 1988 10.0077704073321 1989 16.7584206554534 1990 13.1702707195117 1991 2.9897710337668 1992 2.12488379478592 1993 -2.70997254050077 1994 -0.650849460665255 1995 -0.804468577801261 1996 5.72449895551505 1997 6.10398255115931 1998 -0.563582822879354 1999 7.33487778355055 2000 23.1693515534925 2001 18.4292836813564 2002 21.2340373561701 2003 20.3473670444452 2004 20.3905656916627 2005 29.2446890297813 2006 32.6380875271288 2007 28.4760152876221 2008 37.3609929251446 2009 12.9078208211213 2010 27.4859943822324 2011 27.0397527227607 2012 27.8038715651964 2013 26.0006218046123 2014 19.9825328831145 2015 6.79379070530743 2016 3.53098269871992 2017 6.31902540017732 2018 21.4933957119442 2019 15.9807387310555 2020 4.64359635421886 2021 11.5542363939996