Year	% of total merchandise exports
1961	18.954248366013072
1962	4.901960784313726
1963	9.67741935483871
1964	5.343511450381679
1965	8.75912408759124
1966	17.0302406141747
1967	13.822284908321581
1968	15.253102401571288
1969	20.338733431516935
1970	17.647960278297113
1971	10.367376055165854
1972	12.46984649122807
1973	13.24238290131878
1974	20.62064709512475
1975	34.061424828761716
1976	16.13916532481588
1977	15.822830917170542
1978	19.493549928332538
1979	17.33490052675112
1980	12.702001305545382
1981	21.31325724880918
1982	26.582647034356544
1983	7.179113220720688
1984	4.939504698705608
1985	2.9900920024211857
1986	7.111320909850735
1987	9.294421004090923
1988	23.724025232966085
1989	19.435185856447017
1990	30.623068739013387
1991	9.865574782871214
1992	21.924409631096136
1993	6.325321553987208
1994	13.254859663252699
1995	7.133543302427517
1996	8.38142436620858
1997	7.615603395631468
1998	14.455854135645819
1999	5.9273374585778695
2000	10.493270661729477
2001	7.332494262767332
2002	28.309327022539126
2003	19.767879250772687
2004	27.55674187853325
2005	24.802159234145055
2006	40.49044082095709
2007	36.19080785123515
2008	41.15282300852254
2009	56.17516279572124
2010	63.62494823790812
2011	44.41092621139238
2012	43.71280176031577
2013	35.103588681531555
2014	38.66757495665118
2015	25.191335399019298
2016	22.70864167405657
2017	20.932749741806422
2018	15.708003218020439
2019	16.868834272416187
2020	10.638855878587563