Year	% of total merchandise exports
1973	0.15595914876490416
1974	0.15528085014096726
1975	0.05781349366942245
1976	0.2658625726074051
1977	0.05588608181083679
1987	0.02758234305756542
1988	0.06620292100144867
1989	0.04403828849534879
1990	1.385602085410419
1991	0.13706386920120156
1993	91.13971754389205
1994	10.183133645215356
1995	49.052703475212105
1996	10.704331752968935
1997	9.01205929753155
1998	8.468826569205987
1999	8.599233279151846
2000	19.481050852222833
2001	30.309371986067685
2002	29.758976232225248
2003	10.037113894244829
2004	16.458539865292714
2005	11.644440059455873
2006	13.890752336089959
2007	12.786692851589429
2008	13.641469758592601
2009	11.132767367261337
2010	21.05439124115318
2011	14.696934090854475
2015	9.278209089783015
2016	4.31161510326009
2017	4.043260279141866
2018	3.875497247548338
2019	4.0418172245501784
2020	3.351128729627357