Year	% of total merchandise exports
1965	0.7785467128027681
1966	0.81374321880651
1967	0.19801980198019803
1969	0.005865839862571752
1970	0.02444410041636451
1972	0.008993614533681086
1973	0.04622592399791775
1975	0.007083510421093861
1976	0.0010680603667719301
1979	0.00023929226918465945
1980	0.0021189832647410603
1981	0.005098100192963093
1983	0.6379928847824957
1984	0.0076661763508042305
1985	0.06128503164912987
1986	0.06128503165618021
1993	0.1645682561713096
1994	0.08072834696925067
1995	0.07100678476526394
1996	0.1610993825445804
1997	0.05751523120892815
1998	0.0023703819389710138
1999	0.6791058615941201
2000	0.034908418942779545
2001	0.1001419848707337
2002	1.337333815472304
2003	2.3218622072685924
2004	3.06228088200919
2005	1.8341412305401532
2006	1.755368822198625
2007	3.7766750421659805
2008	3.237547388699051
2009	3.2423822243653255
2010	2.6084743016395997
2011	2.850799567250472
2012	3.1507833993638914
2013	3.4397925981204502
2014	3.3141151681975614
2015	1.8740418453592051
2016	1.9597977290583335
2017	1.9372790730643414
2018	2.0440941671393884
2019	2.1436497606454457
2020	1.6620870968032035