Year	% of total merchandise exports
1976	0.13351654049569636
1977	0.20998994834844398
1978	0.44547143741960077
1979	0.3730995863316529
1980	0.2826948329348081
1981	0.1325779835922992
1982	0.032528370695145026
1983	0.06745900332388907
1984	0.05229106643016067
1985	0.35488972008279657
1986	0.16465990402023048
1987	0.15280404941298306
1988	0.1573197330012322
1989	0.20016450421313658
1990	0.5149385866428116
1991	0.45930776405885243
1992	0.7231712861064635
1993	1.6682203784841987
1994	1.5402221739902526
1995	1.8135720974852105
1996	2.5551383815423496
1997	2.7218984179850128
1998	2.2746674495810653
1999	1.3882905543434456
2000	1.4699034347975073
2001	1.5577294401287611
2002	1.5876692204126754
2003	2.0804522766103517
2004	2.4875165997359554
2005	2.976360367009918
2006	3.231633007968066
2007	4.210755282277291
2008	4.173324118849252
2009	2.5546358192028187
2010	3.2159979272445023
2011	3.5971465860048077
2012	3.7420194464015184
2013	3.8564347349686936
2014	3.698031250556608
2015	2.5885245600912756
2016	2.5488217897498675
2017	2.7546823456566067
2018	2.8747175376584098
2019	3.533136073954759
2020	3.394338209333128