Year	% of total merchandise exports
1960	1.856486702054512
1961	1.7280168493609689
1962	0.9978754908903625
1963	1.1690219117180056
1964	1.1764705882352942
1965	1.582265211131767
1966	1.9460779427887969
1967	1.8570721772848087
1968	1.5260181664138082
1969	1.1207800288078822
1970	1.0657193605683837
1971	0.8982672477941958
1972	0.8045499430717511
1973	0.7955026621861458
1974	1.0253463786197385
1975	1.1181658861723216
1976	0.7864561929396217
1977	0.661744249206216
1978	0.9057486034516606
1979	0.9654018166401579
1980	0.9914614489638938
1981	1.0185229489980914
1982	0.8824014177267606
1983	1.1648772647333236
1984	1.1152538161503607
1985	1.5332089745976387
1986	1.6257235042463996
1987	1.3515838739095274
1988	1.4867580620034273
1989	1.5151865100611421
1990	1.319606263479366
1991	1.5582150498951195
1992	1.7686517553919991
1993	2.6793226009994413
1994	2.426922300760428
1995	2.5697644230988312
1996	2.7794405349344484
1997	2.5562163695024194
1998	1.4924966084380742
1999	1.5466344509575383
2000	1.859296986294518
2001	2.2573951046059366
2002	2.5002981770956128
2003	2.4187142588936763
2004	2.5370445869654987
2005	2.381725951294372
2006	2.5336012187726946
2007	2.5744644779926515
2008	2.6246025378464477
2009	3.2752329597911642
2010	3.5496563519394937
2011	3.7211009138256492
2012	3.588804138603438
2013	3.8054956524844052
2014	3.8994380957234567
2015	3.7723775732019806
2016	4.045474689704312
2017	4.328560413899388
2018	4.105902989849434
2019	4.090586955591882
2020	4.254398908731758