Year	% of total merchandise exports
1961	78.37837837837837
1962	74.02597402597402
1963	67.3913043478261
1965	74.65753424657534
1966	73.58490566037736
1967	72.41379310344827
1968	67.46411483253588
1969	55.57974706999583
1970	46.6479112479431
1971	54.010829870293406
1972	58.11873931101881
1973	51.91887055080533
1974	47.22161091549296
1975	50.761769684769185
1976	21.17533972897073
1977	37.0932953132997
1978	48.4252996321348
1979	48.41557829099912
1980	39.87210603894449
1981	37.20533668012659
1982	29.68372920106694
1983	23.320227480165695
1984	18.539809042858685
1985	19.854286350325555
1986	20.690737831158273
1987	23.595819114893096
1988	17.686604518689673
1989	21.252766854588565
1990	17.261760577585683
1991	16.150971665876632
1992	29.47984980748432
1993	45.119342843541446
1994	28.276082594880563
1995	28.934201246421637
1996	20.794259936994568
1997	18.202611265187958
1998	5.704548680376436
1999	7.05684428958016
2000	21.976840981466633
2001	22.816152035949578
2002	21.9837870140167
2003	89.33814647549974
2004	79.40461967574555
2005	23.61382259612603
2006	22.77320829431874
2007	30.2031449073249
2008	25.851497438673377
2009	13.993258930289024
2010	11.290163596119477
2011	12.887180837674158
2012	20.38918567426326
2013	21.935465269644954
2014	26.393910981319735
2015	15.979568564800054
2016	13.437315313561315
2017	13.078053578135629
2018	13.090767713686075
2019	11.185687250614999
2020	7.5100104874664355