Year	% of total merchandise exports
1960	0.41834521227145954
1961	0.4241781548250266
1962	0.5651354876104913
1963	0.6062169482780859
1964	0.7153075822603719
1965	0.6349926295498356
1966	0.7489033914625014
1967	0.6112909025530385
1968	0.4818348270212971
1969	0.5526441162458313
1970	0.4976474846181686
1971	0.3328764440963384
1981	2.1009542128784524
1982	8.516347194298772
1983	8.367354407706529
1984	6.761970774883154
1985	4.2872197604125075
1986	1.3070003552840397
1987	3.814896855822341
1988	3.2749540607835597
1989	1.5314701149583636
1990	3.8023823685494307
1991	2.6492281933658943
1992	0.2087059399680783
1993	0.074282008726072
1994	0.045589319206135
1995	0.008626810034713777
1996	1.6124827412069622
1997	5.388879912678026
1998	2.8539937362851044
1999	1.811262072753666
2000	0.32975669296477067
2001	0.027799923648334904
2002	0.001972054534908424
2003	0.001564470336148047
2004	0.008167364916733776
2005	0.016939770484295284
2006	14.032072317337112
2007	16.744583277096936
2008	15.19033826693646
2009	14.584617417373662
2010	14.007099637215592
2011	22.194718736910122
2012	19.745328292245105
2013	21.878999131783416
2014	18.585232383189982
2015	20.781357212995825
2016	20.34197610050643
2017	22.512487037948226
2018	24.135402671095978
2019	24.289972258164624
2020	25.883135347872056