Year	% of total merchandise exports
1960	0.9356081452944414
1961	2.914798206278027
1962	0.7502206531332745
1963	1.239486498450642
1964	1.1710794297352343
1965	0.6663249615581752
1966	0.39467192895905284
1967	0.046707146193367584
1968	0.2152389151958674
1969	0.10325030288143285
1971	0.39723729829933735
1972	0.3154697537435837
1973	0.40623039262831523
1974	0.7375229048812372
1975	0.699342076816116
1976	0.13730662499954893
1977	0.5498295301566749
1978	0.005358880076508319
1979	0.0518798828125
1980	0.12169801927254087
1981	0.21525618451778866
1982	0.09974315152877077
1984	0.6209159607120415
1985	0.04977855317339206
1986	1.176954139890435
1987	0.10562707985364546
1988	0.17953582098915638
1989	0.13519937670431445
1990	0.07954232799572555
1991	0.07945031995552851
1992	0.5322210642268288
1993	0.645266586743455
1994	0.6572867084501852
1995	0.2935685427984107
1996	0.3513987168808611
1997	1.320110019681955
1998	0.7999415577169847
1999	10.437700564494017
2000	0.000772446137426026
2001	0.0008633313450026135
2002	0.0011612966247683178
2003	1.593409561281327
2004	0.4218833547616966
2005	1.2413795564266819
2006	0.942426573518633
2007	0.3314694373575862
2008	0.03959555469315487
2009	1.1206106739443655
2010	2.0718582775311036
2011	3.1516669537667097
2012	7.357569309681809
2013	2.544171573691388
2014	3.486866418201999
2015	3.5568299638140295
2016	2.8509354198942094
2017	4.22484652132901
2018	3.190926599265261
2019	0.984616293463199
2020	0.9846163040710817