Year	% of total merchandise exports
1960	1.8845320923374649
1961	4.210191661367971
1968	0.8994490874339466
1969	1.3273681161286168
1970	1.2274736287225354
1971	0.9816017316017316
1972	0.9829379941739493
1973	0.48958184161535157
1974	1.042218868498814
1975	0.5142150365858246
1976	0.4731150495644338
1977	0.569242046318724
1978	0.3710513804622636
1979	0.43978101729620406
1980	0.590550270765218
1981	0.7930200493790969
1982	0.852925518603286
1983	1.1674207000846921
1984	0.574565018903084
1985	0.5727710741828091
1986	0.6698144524425187
1987	1.1533490657359782
1988	1.1837372145620493
1989	1.1585374175119256
1990	1.1844845191423743
1991	1.0640218219744073
1992	0.4921700223713647
1993	0.4791979250264606
1994	0.4590275416524991
1995	0.391092727074813
1996	0.3339379134901864
1997	0.2560060398095491
1998	0.110338999885462
1999	0.12970746421364182
2000	0.11999333383519423
2001	0.12758078612038357
2002	0.1535660175478771
2003	0.17036357779759678
2004	0.16526629196919224
2005	0.31136890418123153
2006	0.45719201423111433
2007	0.28032155248324586
2008	0.2306199227728234
2009	0.2729559020754832
2010	0.4318258095121332
2011	0.4916462626226647
2012	0.33161323816142546
2013	0.24097905453801288
2014	0.25836336443022184
2015	0.2747033799360404
2016	0.23683638477614574
2017	0.2596725594432631
2018	0.26879418061970745
2019	0.23853497984603825
2020	0.2757702695514126