Year	% of total merchandise exports
1981	19.102774280662697
1982	17.409481062211015
1983	18.920925291152738
1984	10.997531831558543
1985	6.743081618146839
1986	4.8500469192423825
1987	3.2123581485234136
1988	4.467777810034574
1989	7.2761762282174125
1990	15.543641219862922
1991	11.002108309443486
1992	18.31469282692763
1993	8.57157884580976
1994	10.990677430874761
1995	9.30508744636808
1996	5.55551280492474
1997	8.048080469172241
1998	1.8962577691990994
1999	1.8111916073281342
2000	0.872363024180771
2001	1.0797142148126664
2002	1.6467338504989688
2003	1.0124170347406134
2004	0.29650335548039813
2005	0.24689264792525242
2006	0.468866675131931
2007	0.43112622559911956
2008	0.3673559753918548
2009	0.5346645780750221
2010	0.38803307818845273
2011	0.8749981977147523
2012	1.1893320852999407
2013	1.5618490710660682
2014	2.112306576196906
2015	4.56489433736295
2016	5.610157157094268
2017	6.66655615373749
2018	1.9674619522216534
2019	0.9041458043375975
2020	1.0797052176357298