Year	% of total merchandise exports
1960	0
1961	0
1962	7.602339181286549
1963	7.734806629834254
1964	8.666666666666668
1965	10.408921933085502
1966	7.222222222222221
1967	7.523510971786834
1968	6.7885117493472595
1969	12.030722230588843
1970	13.335872463137278
1971	19.17126184485251
1972	13.362514922403502
1973	5.01466842902737
1974	6.83156404058903
1975	6.376044324676666
1976	8.835717666605488
1977	9.892127922952403
1978	14.398440559083403
1979	17.859730304517516
1980	16.683661370642636
1981	27.594820947246824
1982	12.123779826464208
1983	15.263751769771375
1984	15.824705494181144
1985	14.28437572900899
1986	16.420512523538434
1987	13.779161877148244
1988	9.147335449071647
1989	8.477474058749841
1990	9.888536046760121
1991	16.00551191127021
1992	13.554323116056638
1993	18.031158869244845
1994	22.59260734408494
1995	6.158673769989295
1996	2.165269607396505
1997	0.6340548615639442
1998	0.7364447325633244
1999	3.429960604771872
2000	2.8916382701100325
2001	1.0985065731607864
2002	1.0514645693718847
2003	0.684190369060387
2004	1.5901756093213026
2005	1.7123768832133826
2006	15.794988751871578
2007	20.014027542052606
2008	0.24267312262727306
2009	0.657138918213592
2010	34.47728318972059
2011	1.287963275282608
2012	0.40479326662118736
2013	0.3098315747760519
2014	0
2015	0
2016	0
2017	0.006011491926825174
2018	0
2019	0.006014706337174172
2020	0.01269970210045636