Year	% of total merchandise exports
1969	92.94117647058823
1970	95.06172839506173
1973	94.65648854961832
1974	94.82758620689656
1975	94.36619718309859
1976	100
1977	100
1981	99.33466402724143
1982	99.51124144645162
1983	99.88713318258256
1984	99.8822143803506
1985	70.65750736207485
1986	77.8428501722945
1987	59.35347110950309
1988	91.20149470429062
1989	84.87935271351597
1990	73.83387021833107
1991	15.885802311129863
1992	70.67090523661047
1993	74.43519897368341
1994	69.35896515273605
1995	71.77106192287187
1996	81.6109589411137
1997	81.96246879725456
1998	72.92823875921542
1999	94.36206703484632
2000	60.66273076640284
2001	77.11478081693821
2002	60.33055495929458
2003	82.17855952325345
2004	75.16361788933256
2005	76.16499343244173
2006	56.84558087316473
2007	49.10552644763454
2008	51.30966277791919
2009	79.59705540610416
2010	77.14528532214477
2011	88.54920642125042
2012	81.8737240039091
2013	81.85393055278007
2014	89.5668233345954
2015	81.66625436155825
2016	66.97528143054996
2017	87.34681034353764
2018	89.27958446481323
2019	55.70934306638702
2020	68.66695171100585