Year PPG and IMF only, % of exports of goods, services and primary income 1977 9.1554491713881 1978 15.1021674175153 1979 14.5617150871303 1980 9.79351042766037 1981 11.3889605289526 1982 14.9857080884558 1983 17.709877699213 1984 18.3530706760634 1985 18.8782863079449 1986 26.0190452519402 1987 30.2025801155439 1988 26.6355913369586 1989 20.1684229757395 1990 25.6431651611913 1991 21.7651026066515 1992 23.2520104041337 1993 23.2719664041967 1994 16.4888850601257 1995 14.3358259348183 1996 11.0433621975271 1997 7.32398485487797 1998 8.56201972335476 1999 16.6724871557296 2000 14.6280960778647 2001 19.9259716361622 2002 19.7273417591433 2003 19.3057696911304 2004 20.2490985363904 2005 15.850013161073 2006 18.5904378589908 2007 9.46969982843844 2008 11.7992415995864 2009 13.4691282919165 2010 15.9928918700975 2011 11.9438620418218 2012 7.29688339170604 2013 7.12790214057828 2014 6.12320512506086 2015 6.82896736759759 2016 7.75259452677683 2017 5.3364709731047 2018 4.51680228851807