Year	% of total merchandise exports
1960	0.31545741324921134
1962	1.2704174228675136
1963	6.235565819861432
1964	8.848797250859107
1965	12.77712952158693
1966	8.390204737053391
1967	4.727614276768942
1968	2.9457023521653114
1969	3.517507227754577
1970	2.7315914489311166
1971	3.0923994038748144
1972	2.8859142822055754
1973	2.447563280354432
1974	2.5612322571978687
1975	1.935483870967742
1976	1.6890490511251688
1977	2.5298315104348084
1978	2.7577937649880093
1979	3.5294821829983642
1980	5.191148727299835
1981	3.9129310547471854
1982	4.311154482272038
1983	3.7646212279173974
1984	3.2290587949814245
1985	3.532390702219464
1986	2.3977700508635307
1987	2.2929061301264912
1988	2.891058967718979
1989	3.9532267290557326
1990	4.91067083698106
1991	7.848069061316426
1992	11.03070802283923
1993	14.201547496970262
1994	14.386456462974289
1995	15.586670016673901
1996	18.361789119746692
1997	19.568692756036636
1998	17.600296260078142
1999	18.440500840756542
2000	19.17354899436052
2001	20.406576296921973
2002	23.493985351935226
2003	26.2353149434009
2004	26.888024984531718
2005	28.851795825402917
2006	28.34640391483918
2007	29.3619364100934
2008	29.55487673633997
2009	31.453017233538866
2010	33.35684863931867
2011	33.34550465660194
2012	34.880756766933764
2013	36.822475921141034
2014	36.1248037845861
2015	37.49473656372862
2016	37.97473377143007
2017	40.79175714290798
2018	41.80509508030272
2019	41.05543566002337
2020	42.3685247353442