Year	% of total merchandise exports
1960	89.7489539748954
1961	89.31159420289855
1962	89.93174061433447
1963	89.91825613079018
1964	92.29144667370645
1965	90.57142857142857
1966	90.16881827209534
1967	85.15429524603837
1968	67.58675078864354
1969	72.58915439936314
1970	70.0574342724167
1971	72.84100577672294
1972	71.67735689843504
1973	79.91765607711332
1974	88.92985462456751
1975	87.76645494298536
1976	93.85693896472208
1977	64.59754225528876
1978	61.281813001279694
1979	83.70296160371453
1980	80.17948268207256
1981	78.87256819926866
1982	79.42068845645578
1983	87.8320801155356
1984	90.81374829550012
1985	92.29307628266578
1986	89.96045472322956
1987	92.67352398663698
1988	84.08997251575916
1989	88.6429657267915
1990	91.96609260373162
1991	93.89173395374732
1992	94.696771131235
1993	92.77777584685882
1994	87.81278223080756
1995	85.4880079176246
1996	82.24300818347879
1997	79.38901556785332
1998	77.7506950043298
1999	80.23249032471696
2000	87.27705523787579
2001	86.38839288071131
2002	81.48131589745311
2003	88.15759867864539
2004	84.0638275070788
2005	86.09367816902167
2006	79.19426220574016
2007	79.042488599353
2008	73.81082804395881
2009	81.4952626537483
2010	82.39122379377525
2011	88.49534165834756
2012	87.82420954013405
2013	82.67349204733677
2014	75.03802341734249
2015	77.76310379955369
2016	67.88901662412702
2017	54.87095883896062
2018	53.521436281604295
2019	39.135580505523784
2020	45.052892528112096