Year	% of total merchandise exports
1960	14.853748915928634
1961	14.71265123619148
1962	14.913139221923172
1963	11.547344110854503
1964	12.401055408970986
1965	10.847394770999443
1966	11.712110943120788
1967	9.876581397506882
1968	7.787699801248506
1969	8.98776237944728
1970	11.708391054818918
1971	9.738978756982371
1972	7.903828860807422
1973	9.161232203356638
1974	7.546719123226069
1975	5.288764308558586
1976	6.3706415113703425
1977	9.040236769783666
1978	6.6867427780001405
1979	5.670622596104404
1980	7.483181232529212
1981	4.637387092551381
1982	4.637387070135232
1983	4.637387061688751
1984	4.637387048668953
1985	4.637387082877857
1986	4.637387098445251
1987	4.637387098368421
1988	4.233915648841817
1989	5.934506318324143
1990	3.1133343193149883
1991	2.528878249124222
1992	5.1716301519832015
1993	5.955837706241479
1994	10.797054420088413
1995	16.33194478448153
1996	6.351702783972689
1997	0.30845612125764466
1998	0.10449011700867494
1999	0.1358488845529042
2000	0.024462932050020363
2001	0.018093465955302663
2002	0.04951744768666289
2003	0.02061999197910288
2004	0.031667167188013004
2005	0.028449461164752672
2006	0.019618622967670127
2007	0.0216543445912363
2008	0.0015284561349793858
2009	0.009086152509282982
2010	0.01283750676804977
2011	0.030335169999206355
2012	0.005261512573528069
2013	0.001796623547719019
2014	0.00992243533292418
2015	0.00032872242664347303
2016	0.00027910166793512433
2017	5.7317906279367436E-05
2018	2.804591480342512E-05
2019	2.9311963079987678E-05
2020	2.9931091175882252E-05