Year	% of total merchandise exports
1963	0.9985734664764622
1965	0.14388489208633093
1966	1.536312849162011
1967	4.470914210851266
1969	3.9873479556445703
1970	2.481351444007046
1971	5.842842842842843
1972	4.575667703485802
1973	6.463500528248729
1974	6.779006723053567
1975	5.841386456522029
1976	6.857908233662913
1977	6.1969681002245025
1980	0.09187530016078177
1981	0.027111015691479775
1982	1.711745622238477
1983	0.43815884178171877
1984	3.3879432006665002
1985	0.7030755215840351
1986	0.07672452793586874
1987	0.1658143279815443
1988	0.8577374106300606
1989	0.5073422064950945
1990	3.375056745587088
1991	1.3899759880267455
1992	2.3559421914022947
1993	91.86925818241686
1994	24.99514238533139
1995	60.52836558412969
1996	26.80234275275568
1997	20.09311570053953
1998	13.45422874546926
1999	17.228523465924017
2000	26.093483236377597
2001	35.82126254054543
2002	35.312048646100884
2003	17.533548909676885
2004	23.2664665041164
2005	18.742086294096648
2006	20.466537993613017
2007	18.513394350943923
2008	19.626526880978528
2009	25.603876920529455
2010	35.745888993032835
2011	26.089621672727052
2012	10.269069653695697
2013	16.84919713647999
2014	11.766884907108187
2015	19.54835525912179
2016	13.010116036212308
2017	12.776340132961938
2018	11.556246847702209
2019	11.442127952549624
2020	13.789975107652255