Year	% of total merchandise exports
1961	1.3071895424836601
1963	1.6129032258064515
1964	0.7633587786259541
1965	1.4598540145985401
1966	0.9830540211590675
1967	1.0578279266572637
1968	0.6294080885635212
1969	1.7194403534609721
1970	0.281975051337849
1971	1.0105813815241944
1972	2.7768640350877187
1973	4.467939972714871
1974	13.403273678333186
1975	5.52065907010511
1976	4.68811868120265
1977	1.192297418712513
1978	0.011025763534124738
1979	0.01305994514823038
1980	3.2352051457593656
1981	9.008663405901347
1982	0.09982530571499876
1984	2.4795329107649753
1985	0.3007784854168698
1986	3.1488629098961844
1987	6.683661509985973
1988	6.694630422770444
1989	35.67348870531704
1990	20.01878568028489
1991	13.31891223880949
1992	26.720273757323564
1993	70.76564350583212
1994	45.01307895314556
1995	49.03960204996836
1996	54.92404993389148
1997	59.672210869675745
1998	57.84420341749167
1999	68.55623779798337
2000	65.89449552888034
2001	19.09231081039948
2002	53.76434177244654
2003	59.28442655192862
2004	56.2608389618356
2005	61.576012592774056
2006	46.06351461501087
2007	50.63840467008348
2008	49.82629610096537
2009	37.00252420212013
2010	25.67261432955965
2011	42.380201882227055
2012	47.71283425155052
2013	54.01206025072683
2014	44.407195052569875
2015	55.04310680154569
2016	63.91369781107578
2017	65.42859141916686
2018	70.87658687787314
2019	70.60621258951639
2020	66.63332690657174