Year	% of total merchandise exports
1960	2.9343629343629343
1961	3.040734366035571
1962	5.414220482713634
1963	8.650937689050211
1964	10.317902955939767
1965	7.945635128071092
1966	13.050483351235231
1967	9.955891619407687
1968	8.31918505942275
1969	13.716239828266188
1970	11.619228799297577
1971	18.924529402613565
1972	9.493978380095486
1973	9.847400900788813
1974	33.911867138704196
1975	28.530382480352394
1976	21.16213786397079
1977	25.2856251656305
1978	27.269435251793244
1979	38.0883022187742
1980	34.74190462610331
1981	24.313871063483997
1982	28.155872135714855
1983	22.128742996504013
1984	24.368195821705335
1985	26.86077621300025
1986	38.07603792521571
1987	29.69369296636703
1988	26.962888700672394
1989	36.513602172875025
1990	38.67328345123839
1991	39.176826388110385
1992	38.426646026526036
1993	47.91778604184878
1994	51.92691451744969
1995	50.759323731501425
1996	51.59975954067429
1997	53.18171376904114
1998	59.154792293688075
1999	49.55775871982233
2000	50.688827447749404
2001	47.636066611900326
2002	38.882609868460975
2003	36.64596783560451
2004	32.379062486471774
2005	30.38157010863148
2006	30.952375674409982
2007	36.612174155947116
2008	33.52042765918624
2009	33.6737018278518
2010	36.475498514030214
2011	35.36021140126276
2012	31.669238742409807
2013	30.113601398807884
2014	29.42353169606561
2015	27.440905442934138
2016	31.652463472806613
2017	29.3860867329163
2018	29.532799466849745
2019	25.849143175188765
2020	30.011897850754394