Year	% of merchandise exports
1974	55.17947898622092
1975	70.30796675818229
1976	64.69757352753848
1977	60.57916135787218
1978	62.80270051904366
1979	72.13045353064285
1980	78.85560825656476
1981	79.01220500285143
1982	74.70377320042685
1983	68.84713082398864
1984	63.06101930984873
1985	74.05294336172273
1986	42.03140904534331
1987	51.81300013621175
2000	76.34279074524386
2001	77.43664571036987
2002	72.16647493678697
2003	71.34500377041458
2004	67.6287275526281
2005	67.82655601519545
2006	40.346856586818774
2007	41.10716805864581
2008	38.573549223299246
2009	37.824118741336534
2010	49.88587242881227