Year	% of total merchandise exports
1960	0.8368200836820083
1962	1.2100259291270528
1965	2.335279399499583
1968	1.128526645768025
1969	1.0990928122819261
1970	0.23929950508511447
1971	0.4736938925680647
1972	0.40209733972400036
1973	0.897577480673888
1974	0.4525473338589652
1975	0.8773159505619028
1976	3.1910842578253917
1977	2.949830171126928
1978	0.9824049561474597
1979	1.4830840097493347
1980	0.26948506864706856
1981	0.08726676435132381
1982	0.016698038739449875
1983	0.4942608323622628
1984	0.10043428528916706
1985	0.45348461040761623
1986	1.0387643502086776
1987	0.7737741160380144
1988	0.9971264704063229
1989	1.2212729999684586
1990	1.8845752799409567
1991	1.4368195465730347
1992	0.9088279305294665
1993	0.501870491529062
1994	0.5375438163169676
1995	0.7019411110670783
1996	0.6989967483763538
1997	1.173889804981252
1998	0.8787057761429727
1999	0.8802772652778547
2000	1.9002578934406928
2001	0.912573986637783
2002	1.0723060690874868
2003	0.9940231714573096
2004	0.9882144413911286
2005	1.3018328726470054
2006	1.4783134175001493
2007	1.549259173301204
2008	1.6288823131712225
2009	2.234293799409455
2010	2.4306243395562634
2011	2.6393833316832236
2012	2.4934276328096026
2013	2.542476879871232
2014	2.5761954995716905
2015	2.617525612986808
2016	2.473027956899127
2017	2.5148312561157167
2018	2.620018794059147
2019	2.4188416751636734
2020	2.9784210046975663