Year PPG and IMF only, % of exports of goods, services and primary income 1975 22.1656341891722 1976 37.6382370287931 1977 22.376713569562 1978 16.8153005766741 1979 32.9233969153803 1980 14.9786201321161 1981 18.9988761921095 1982 15.0614885359144 1983 13.0411777037496 1984 17.4628388103473 1985 23.6212147262934 1986 21.0067160970752 1987 25.7968953493983 1988 26.0078412268882 1989 19.4891585728532 1990 28.7825550773423 1991 18.827249507171 1992 18.9949219076087 1993 29.2329332465244 1994 23.8398400501934 1995 22.0552369981404 1996 21.9262851405163 1997 22.9295582326818 1998 25.7062700139883 2006 5.53360109366058 2007 7.14172585899564 2008 2.88650905597977 2009 4.71178308957952 2010 4.85520581476021 2011 3.94415571954538 2012 5.02781852330624 2013 5.63699973390328 2014 9.8505525292163 2015 12.5530419112388 2016 12.8835456006522 2017 13.2710546017483