Year % of exports of goods, services and primary income 1977 3.3141055870477274 1978 2.6731930094433842 1979 0.4031180268290379 1980 0.6734959551640266 1981 2.0398667779644852 1982 2.754925269659822 1983 10.811472724815195 1984 9.21596103503096 1985 6.253215760603993 1986 8.266052653177947 1987 8.933397113573019 1989 7.511471551672183 1990 7.510319263023633 1991 5.165045826840526 1992 7.0172748880605775 1993 2.8214662538070265