Year	% of total merchandise exports
1960	21.5772759350741
1961	14.164773900474911
1962	16.038647342995173
1963	14.033742331288343
1964	15.390334572490708
1965	15.928618638466624
1966	17.42861858392474
1967	14.701729615248855
1968	19.79959351514865
1969	13.933975056050048
1970	14.995407324993208
1971	17.226757800139232
1972	14.287791578309603
1973	11.190148046058773
1974	9.746880523386183
1975	9.124516528837319
1976	10.231910153708657
1977	5.315655457019932
1978	9.147008369886828
1979	4.2562212582759855
1980	3.653471750271679
1981	4.442244632803316
1982	5.801658349278999
1983	3.1454131465329533
1984	3.682542715648338
1985	1.67256121544671
1986	2.4821709445875135
1987	4.252102391316726
1988	5.104350688487233
1989	4.25914695155284
1990	2.7833168097187477
1991	4.703751485567079
1992	7.392499956556366
1993	7.228348814616529
1994	10.039167176043996
1995	9.27456446928897
1996	9.075255072678997
1997	10.384730766156943
1998	9.471030460992266
1999	11.226437398911797
2000	8.889497026539651
2001	13.290244103505792
2002	19.92386996682019
2003	17.914041640120004
2004	15.69721930813303
2005	13.910707882992895
2006	16.772453527053248
2007	19.562460149380794
2008	19.134943447027755
2009	20.104607999644013
2010	21.41355599892751
2011	25.700814660841875
2012	26.00918044705403
2013	26.548982203398158
2014	24.220647572207
2015	24.520508437020634
2016	13.741639982592355
2017	13.912927786549748
2018	18.965840134339174
2019	24.594832644884317
2020	26.746952243751267