Year	% of total merchandise exports
1960	4.16044383139314
1961	4.493888857523235
1962	3.024973322517217
1963	3.9333976504686645
1964	3.520311720530141
1965	3.8725143179326063
1966	2.182960467032453
1967	2.0252201893938864
1968	2.0089687771724205
1969	1.4522696125621866
1970	2.240238054548834
1971	3.064829880228561
1972	2.652702399777971
1973	2.921689316005517
1974	2.632398113771408
1975	2.262867853258859
1976	2.5881138697934656
1977	2.57858919920048
1978	2.573237662053512
1979	3.011949156387922
1980	2.193234209068014
1981	2.4988452848982865
1982	2.6006468982616355
1983	2.4349753405494523
1984	2.3020637810330156
1985	2.723813016505254
1986	2.317328792893459
1987	2.383280905241515
1988	3.013031813454674
1989	2.91062485307205
1990	2.9216650901996304
1991	3.5758888048933386
1992	3.9080759017390267
1993	5.3135534430895
1994	5.597495367551933
1995	7.016283512173679
1996	7.045455769889856
1997	7.254863860340248
1998	6.2213911357176634
1999	7.440841533347594
2000	7.877088234349731
2001	7.574951803345729
2002	8.012599118072046
2003	10.178624076991467
2004	11.887217044252862
2005	15.61266904263372
2006	11.19246327603125
2007	7.284346099423597
2008	8.79038489885387
2009	8.807761208026482
2010	9.535076533091203
2011	12.99717642280508
2012	14.9141883335762
2013	17.557664566682345
2014	17.85760068943747
2015	16.177723151215094
2016	16.92689987684868
2017	17.818215093219493
2018	19.353650003734483
2019	18.976299518533246
2020	19.23162803678277