Year	% of total merchandise exports
1963	97.69399285137784
1964	98.3439766208464
1965	98.58213489973669
1966	96.92791063012741
1967	91.94621848739496
1968	88.19675834415767
1969	98.86196534748417
1970	97.68295168852347
1971	95.97061187004935
1972	95.2129313024557
1973	96.56736791392323
1974	97.09447415329768
1975	92.36918903366353
1976	86.300239098258
1977	80.50572679804615
1978	81.13014004103113
1979	81.2075901721429
1980	61.7699406723797
1981	49.62526207952877
1982	55.49948249511038
1983	49.56674640791247
1984	67.95208041217965
1985	67.49574537785247
1986	70.32511271986273
1987	58.43270643254813
1988	66.15030617062109
1989	73.57006727070683
1990	47.7211785355086
1991	36.54828314614595
1992	42.726612180416346
1993	77.88227189168501
1994	59.94807485612807
1995	63.499364228376606
1996	76.74209959807547
1997	76.24314185948259
1998	82.99471647850338
1999	77.21994498738606
2000	34.12669449371934
2001	87.39385127420178
2002	82.12688809616795
2003	69.20074471418374
2004	86.27381792519408
2005	78.53505331721269
2006	57.846710355099
2007	75.17990524477234
2008	60.87054065321804
2009	42.89474151082364
2010	40.23769791419461
2011	6.776918442995354
2012	5.248207294980213
2013	2.7603144622160447
2014	2.6716206332985952
2015	13.069595609313033
2016	6.097907451615603
2017	13.251217076618662
2018	13.795563366564418
2019	6.504118487709216
2020	3.496145300588082