Year	% of total merchandise exports
1960	5.885698038100654
1961	8.340649692712896
1962	9.07246376811595
1963	7.989487516425756
1964	8.560130262851825
1965	8.002799813345778
1966	12.173507462686567
1967	10.316336166194523
1968	9.11978221415608
1969	9.60442577263841
1970	9.223381698748597
1971	10.495213810130938
1972	11.05872401748093
1973	10.839368005266623
1974	13.18269191203701
1975	15.458912112164091
1976	14.49235136914061
1977	13.356130095576965
1978	11.899429424625394
1979	10.431589469486267
1980	12.16029077238494
1981	11.726555422809804
1982	11.870538391596206
1983	10.97608570508631
1984	9.052845153555289
1985	10.901019552943994
1986	11.02914960842892
1987	10.401586245297624
1988	6.065208127210312
1989	9.016703457178837
1990	14.826791778976444
1991	13.032401044257117
1992	13.91140847980989
1993	3.657480279793811
1994	8.571103166060151
1995	8.98601430524813
1996	10.670793081869181
1997	11.723302380026258
1998	14.185895000697638
1999	6.4786870463772805
2000	0.08860914012912131
2001	1.4449996892801276
2002	0.10454171254173958
2003	0.05881005057133695
2004	1.273442339623198
2005	0.9000186460566307
2006	0.20508601165360835
2007	0.20757298109386751
2008	0.42592067876543294
2009	1.7372597873584534
2010	3.2453269402902234
2011	4.837207188109336
2012	4.168031352392656
2013	1.540329561082406
2014	1.7412009115701246
2015	1.5005539427380243
2016	1.040863256343884
2017	1.2410638851341405
2018	2.4408482674356846
2019	3.020475685409634
2020	4.8147729636556305