Year	% of total merchandise exports
1960	0.22789425706472194
1965	0.0007372619565457803
1966	0.15982209517634086
1967	0.007122084396700101
1968	0.0007871892816307413
1969	0.01138130524310468
1970	0.19933503530333466
1971	0.13471037269869782
1972	0.15292749678057527
1973	0.02713161188856079
1974	0.39293911781272056
1975	0.7601825087790546
1976	0.44009676267484615
1977	0.4961132344723996
1978	0.18861350258608417
1979	0.8782408676494377
1980	0.8294439845328183
1981	1.6137556285932564
1982	1.5395587958424868
1983	1.6817041703125573
1984	3.112482224158707
1985	2.9657920547862173
1986	2.9978136198925855
1987	2.778734702052149
1988	0.7997997053294179
1989	0.6707825783966043
1990	0.859156774805786
1991	3.0011465912132893
1992	3.9335978169079877
1993	5.0457834655106355
1994	1.8696473908096571
1995	1.8486193373505635
1996	1.356923012439179
1997	3.340305864005892
1998	2.9144829125652185
1999	2.656304171146238
2000	0.9791259741100322
2001	1.4292299138845865
2002	1.2153415899799216
2003	1.2787448164044992
2004	3.0954188947787387
2005	2.7775551407657435
2006	3.6327703914107445
2007	4.126472582269979
2008	3.805988091577646
2009	6.030398300934936
2010	5.957246669781612
2011	6.675796114500636
2012	8.401196721770772
2013	7.58842443533829
2014	9.14353778167368
2015	8.471836687710924
2016	9.85020308568904
2017	10.223865205504003
2018	10.691989802374732
2019	11.084067299565596
2020	10.937330818344206