Year PPG and IMF only, % of exports of goods, services and primary income 1974 29.8747241389443 1975 16.5863035705515 1976 3.29194224930725 1977 37.7535536257953 1978 4.802386806469 1979 7.86222464189162 1980 13.8614363069077 1981 20.7044231111836 1982 25.6975096987403 1983 19.8842722066492 1984 27.9945710744527 1985 40.2792661650481 1986 50.8484808828706 1987 55.972845372687 1988 52.2271485471311 1989 49.4932794967556 1990 44.3543853904638 1991 31.882052069765 1992 18.3585581638049 1993 14.3574435657434 1994 9.55283140357571 1995 7.26341917197568 1996 10.0415162167677 1997 32.0039006325505 1998 17.6980841734259 1999 20.5047354286317 2000 12.8625466574445 2001 6.17161192905299 2002 5.42076644519722 2003 8.40530331640906 2004 8.88385975214938 2005 5.83842503791217 2006 3.52711260926713 2007 0.87825957889432 2008 0.977267310525758 2009 2.20063547550279 2010 2.58583027091247 2011 1.66166796014123 2012 2.31952216348844 2013 2.14810497362872 2014 2.68564081587561 2015 4.35690530766532 2016 3.30232530608111 2017 3.06652571040706 2018 2.48382539895881