Year	% of total merchandise exports
1972	0.02007377110882493
1973	0.02891519814942732
1976	0.5150626403070462
1978	0.24158757549611734
1979	1.8448984583230263
1980	1.6228918316892271
1981	2.074747313553865
1982	2.0747473135490395
1983	2.074747313563881
1984	2.074747313777112
1985	2.074747313318263
1986	1.732311051870325
1987	1.6338839873693973
1988	2.141654856073438
1989	1.3174816590727148
1990	1.6388554946067824
1991	1.5360012807710204
1992	6.115912789344072
1993	7.273220911624753
1994	6.103102290443071
1995	6.205941381515817
1996	4.040566199774379
1997	2.3850640822251448
1998	2.3661044708603454
1999	3.4401212516893827
2000	1.568656548904317
2001	1.6881495032496994
2002	1.3225287251282156
2003	1.493204371132442
2004	6.103507597065205
2005	4.414805406745721
2006	6.230417469264214
2007	7.261256795372032
2008	5.34641081588614
2009	9.795266190422119
2010	9.064121661228382
2011	10.01102456023664
2012	11.71806687061214
2013	10.711221827074024
2014	13.065580026289537
2015	12.838695988263083
2016	14.278061098674142
2017	14.935273593986171
2018	15.784660065177928
2019	16.74755992041659
2020	18.843502462952184