Year	% of total merchandise exports
1960	9.122257053291536
1961	10.778097982708934
1962	6.694670517196115
1963	6.740962217994021
1964	7.179362375273788
1965	6.2967855570233375
1966	5.2181002853648595
1967	4.91866028708134
1968	7.09820528332325
1969	7.090045628084551
1970	8.581284303896412
1971	9.705452019567563
1972	9.383967001434721
1973	12.696350985932611
1974	13.780385910859291
1975	15.718915523321389
1976	10.881254591461921
1977	11.521586571651898
1978	13.597370985574505
1979	16.155766880943524
1980	18.779043030015995
1981	28.034027654029618
1982	31.11716003540581
1983	30.26537232185994
1984	27.998653173247362
1985	27.929959694252044
1986	20.899029022446804
1987	18.171639092587824
1988	17.881312896596523
1989	14.7510923160733
1990	12.27573222412411
1991	13.007935456616812
1992	5.116275898629385
1993	5.072348929592792
1994	2.8349844334139576
1995	3.1134801089023703
1996	3.1840515883511493
1997	3.200850869778913
1998	3.8076556578640313
1999	3.773788114747609
2000	3.189747247154622
2001	4.282024475508826
2002	3.8712071103856607
2003	3.9917579356660773
2004	4.6272412367104625
2005	4.2950859712731315
2006	3.9995480814960858
2007	4.486344944798953
2008	4.271314644661845
2009	6.058023342467729
2010	5.48138870860409
2011	4.628647145598085
2012	5.870877764831424
2013	5.332534469589907
2014	5.968125889253205
2015	6.687181809709779
2016	7.564803239612404
2017	6.761177459121376
2018	5.893610595715611
2019	5.795675051600887
2020	5.863252505951764