Year	% of total merchandise exports
1972	0.008223684210526315
1973	0.022737608003638016
1988	0.05240405882537541
1989	0.2689786841793277
1990	4.980162556074043
1992	0.20262537166833589
1993	0.01056238180695133
1994	21.254168698296937
1995	19.41481037488281
1996	24.15750620561215
1997	24.063407678816777
1998	26.0959974686665
1999	20.914594460107608
2000	10.575396360882468
2001	1.9105939288286233
2002	0.7563696226902766
2003	1.5897803204446195
2004	0.3198642755911227
2005	0.17105122827426017
2006	2.387387386587828
2007	2.088841542510024
2008	0.30052115651597766
2009	0.215131367516366
2010	0.07292897731476361
2011	0.11303582351102032
2012	0.3118200748884044
2013	0.14732083225117865
2014	0.9704120836220347
2015	0.5646217856362366
2016	0.46607736274016187
2017	0.013735479164045522
2018	0.0073584171209656185
2019	0.12128284033456553
2020	0.09346935566612768