Year	% of total merchandise exports
1960	80
1961	72.54901960784314
1962	82.35294117647058
1963	88.70967741935483
1964	93.12977099236642
1965	87.59124087591242
1966	78.45707330774273
1967	79.34991665598153
1968	80.3053298812606
1969	74.92636229749633
1970	79.2165997486744
1971	82.85578409226014
1972	81.92160087719299
1973	74.69986357435198
1974	57.68609127508889
1975	54.288059089043905
1976	75.36361956550431
1977	80.36473130812753
1978	78.757028924253
1979	80.97818989160245
1980	80.33084430575236
1981	58.88238867043892
1982	70.32692787621662
1983	80.8600097525062
1984	89.46288263942157
1985	92.67368481828812
1986	86.00227693742217
1987	73.64627285735176
1988	64.95049645722649
1989	41.997879058155405
1990	47.94042284604952
1991	16.28553770025121
1992	33.749681379064306
1993	21.448334667362488
1994	32.48478824171902
1995	37.206339751059495
1996	35.72179182437109
1997	30.630285414551388
1998	27.597320900770335
1999	25.1285670618414
2000	23.454833302886062
2001	8.076469602486917
2002	17.71118530724917
2003	20.886924952907076
2004	16.18241915963115
2005	13.621828173080894
2006	13.33448307451347
2007	13.081971456550095
2008	8.896778224697679
2009	6.786109539672911
2010	10.689272743390852
2011	13.20497142141214
2012	8.572084758717438
2013	10.874316120539152
2014	16.925100680266457
2015	19.76555779943501
2016	13.377660514867651
2017	13.496607982756936
2018	13.415372172933857
2019	12.506384189593447
2020	22.71810998848345