Footnotes  
a    2017
b    2018
c    Data classified according to ISIC Rev. 4.
d    Estimate.
e    Provisional data.
f    2016
g    Trade statistics exclude certain oil and chemical products.
h    Data refers to a 5-year period preceding the reference year.
i    2015
j    Data as at the end of December.
k    2008
l    2000
m    2004
n    2014