Year PPG and IMF only, % of exports of goods, services and primary income 1976 12.2438008378407 1977 16.2100471896723 1978 18.8218933834844 1979 19.8171492833156 1980 17.5880692388858 1981 21.64782304974 1982 24.7004552694916 1983 27.5243839063204 1984 29.6129637282804 1985 37.3683832490918 1986 46.0290781218994 1987 44.2734959552074 1988 40.0726287238246 1989 30.5146556943753 1990 27.0745324084828 1991 29.7653650789415 1992 28.8117932650839 1993 20.9073982618431 1994 18.0357487391471 1995 17.8119303714165 1996 17.8422626345715 1997 16.3645025828281 1998 12.3486492669699 1999 14.9839099387918 2000 15.4250810556378 2001 19.4540298913043 2002 23.7323350027307 2003 21.8253130585175 2004 19.6156379442864 2005 20.99002373865 2006 14.2726219461474 2007 18.7770223010838 2008 15.7512328285454 2009 29.2683204402822 2010 19.6156362034008 2011 27.2971434009455 2012 22.8356882398732 2013 22.8188241418479 2014 28.4784211846857 2015 27.541114001128 2016 37.2877892922948 2017 24.2203387760768 2018 18.3154138726849