Year	% of total merchandise exports
1977	0.0017922431715535162
1978	0.005799140953920026
1979	0.0015403969089368694
1980	0.0303929962675918
1981	0.012423211700095103
1982	0.02957462524923217
1983	0.022527267932699123
1984	0.013653492563397715
1985	0.012462763358593405
1986	0.011153310496525985
1987	0.014832765938236936
1988	0.004887271402901299
1989	0.0024494349358330928
1990	0.0013412900687141526
1991	0.02450532396480597
1992	0.014861031858581925
1993	0.06120159505698502
1994	0.02648089026978866
1995	0.02417735317660432
1996	0.04173796251034804
1997	0.03489708394200074
1998	0.053483465518303325
1999	0.0386725827262037
2000	0.04454024412528821
2001	0.032749548897317134
2002	0.050251823272769267
2003	0.06308610760094563
2004	0.07929121339575115
2005	0.03913243510834769
2006	0.06245836898297706
2007	0.08980371451746175
2008	0.17530922614561306
2009	0.13800678297956137
2010	0.027404018443401512
2011	0.01140661791671372
2012	0.0644986898471158
2013	0.016326171933745633
2014	0.0009645265906205536
2016	0.0016328244371265099
2018	0.012348066145201958
2020	5.626796031319113E-05