Year	% of total merchandise exports
1960	2.681204754669765
1961	2.3666666666666667
1962	2.069293585982716
1963	1.7696438024654013
1964	1.8277851136284662
1965	2.3752820255703186
1966	2.1098300249613695
1967	2.0444247983202564
1968	2.0805065581184983
1969	2.097931091670467
1970	1.9130862117382759
1971	1.9977872609451557
1972	2.046768531901714
1973	2.319060250094733
1974	3.0980008388088915
1975	4.172545052838928
1976	4.493787065800621
1977	4.110259836977035
1978	4.065267300754346
1979	4.091197041978565
1980	4.825479630710094
1981	5.925228804406182
1982	5.520801350936445
1983	5.444360156386765
1984	5.306231374816528
1985	5.116360048749347
1986	2.9866818551957675
1987	2.332198398822122
1988	2.437744562189008
1989	2.0765694277473266
1990	2.0544451929365612
1991	1.9602408735562464
1992	1.7921718056913196
1993	1.6526276639540833
1994	1.6126089919540472
1995	1.065111410030077
1996	1.0028743593070542
1997	1.079079400514074
1998	1.0217799952358486
1999	1.0165179807422053
2000	0.8547644127345301
2001	1.0081606006649004
2002	0.9276497352500723
2003	0.8788904676145308
2004	0.9496079037887816
2005	1.0522311738073145
2006	0.9410734251019246
2007	0.9646054504163513
2008	0.9627795931505794
2009	1.272593321759175
2010	1.1364854679156662
2011	0.9708844033492229
2012	0.9583640649557882
2013	0.9527220780258869
2014	0.8782074995932063
2015	0.972643846576921
2016	0.903758494312578
2017	0.853105183126421
2018	0.7863817455293132
2019	0.7424750540101864
2020	0.6763379849719922