Year	% of total merchandise exports
1960	1.073232323232323
1961	0.5770340450086555
1962	1.6602102933038185
1963	0.39447731755424065
1964	0.6896551724137931
1965	1.6385767790262171
1966	1.776167386014458
1967	1.7559657811796487
1968	2.0072992700729926
1969	1.4119926764456538
1970	2.055137844611529
1971	2.452882967935942
1972	2.7945173264350065
1973	3.395533959183883
1974	2.3891322848047403
1975	2.476140358047903
1976	3.3751346791916945
1977	3.530984089886433
1978	2.665485682118622
1979	2.866242816671433
1980	1.7994700704317
1981	2.5192541527607473
1982	5.257782183752663
1983	4.743657968912645
1984	4.561049770978393
1985	3.694632492608268
1986	3.5796562416787636
1987	3.575753892940772
1988	2.5897426063389015
1989	3.804449210638716
1990	3.24491286404113
1991	3.3518323901791782
1992	2.1624069590096404
1993	2.2133526370129126
1994	3.6339698208649462
1995	2.6976259961506543
1996	2.6449967125100935
1997	3.5948792166103067
1998	2.2480921465452464
1999	2.4316663011189052
2000	2.8510616517065968
2001	2.9699791060458374
2002	3.0294803526091507
2003	3.1968772084688077
2004	2.3871654088363257
2005	2.5037111799583336
2006	2.0285499461567658
2007	1.710919279829529
2008	2.1072320495058294
2009	3.6585786026636535
2010	3.2706619888349655
2011	3.1098156215856423
2012	3.8868393660245344
2013	3.8051764716097862
2014	4.537680684896532
2015	3.2536202966436494
2016	5.297374940502982
2017	4.405316372626709
2018	3.2142952513223957
2019	3.4444618229020207
2020	3.623943191158284