Footnotes  
a    2017
b    UN operational exchange rate.
c    2018
d    Estimate.
e    2016
f    Data classified according to ISIC Rev. 3.
g    2011
h    Data refers to a 5-year period preceding the reference year.
i    2015
j    Data as at the end of December.
k    Data revision.
l    2014
m    2008
n    2004