Year	% of total merchandise exports
1960	57.52069594499789
1961	60.91793629248119
1962	58.01822407496219
1963	58.37203671501838
1964	59.1371905129001
1965	57.3751388357823
1966	51.670191352205265
1967	46.18358611367485
1968	48.033742711822356
1969	48.54912503545487
1970	45.59543850122183
1971	44.77901500562473
1972	44.66542915230266
1973	42.14086899599936
1974	33.02281134401973
1975	34.248743285661845
1976	34.70664235800532
1977	39.71077534881866
1978	35.486546954724815
1979	31.102511602651976
1980	31.695919044459192
1981	27.657509630942805
1982	29.71948490730999
1983	30.191334545072536
1984	32.99269501038706
1985	36.254003456811695
1986	35.89865889649789
1987	31.385498633053142
1988	30.975227302829865
1989	32.41648780240058
1990	32.61970447649317
1991	29.637717461272906
1992	7.327944421439965
1993	2.2383025694486984
1994	2.5699720761088383
1995	4.165684583989778
1996	3.904819214065198
1997	3.8990770991820285
1998	2.08934436777849
1999	1.7272340515549454
2000	2.2533585043773585
2001	2.3663212342636837
2002	1.1889564872628005
2003	1.1656876975829622
2004	1.5672911462693249
2005	1.9519955443492616
2006	2.085700917021325
2007	0.11627767157109392
2008	0.19381043020050387
2009	0.21213263049522807
2010	0.09891205200188334
2011	0.09566179076465296
2012	0.11311806468810966
2013	0.45977792069607504
2014	0.19410205335214892
2015	0.1522701969866242
2016	0.15083299557125554
2017	0.15727369714785397
2018	0.16122388384538483
2019	0.04170463865516181
2020	0.06100041946765951