Year	% of total merchandise exports
1962	0.5847953216374269
1963	5.524861878453039
1964	0.6666666666666667
1965	0.37174721189591076
1981	0.18627262225644975
1982	0.010733007953723788
1984	0.3811070595253695
1989	1.3657155214976764
1990	1.6042860945625237
1991	6.714646256618413
1992	0.8406706436939773
1993	3.211774669548204
1994	0.5619820293991356
1995	5.3756579945253025
1996	12.681064492179075
1997	8.906654193498657
1998	4.977176721324918
1999	8.415102004822431
2000	5.606683088108879
2001	1.344803714536906
2002	0.860445907048087
2003	1.1235733731276505
2004	1.1689451201553767
2005	1.7551427097726522
2006	0.760825570114765
2007	0.7660146283622101
2008	0.011624440995121253
2009	0.03468731379122626
2010	0.4635980574663491
2011	1.242569772867895
2012	0.00012741137065613148
2013	1.771444590482282
2014	0.0012317841923270344
2015	0.5430004778830883
2017	0.015821949625589294
2018	0.020840949265730747
2019	0.00851733807162611
2020	0.017983863240336743