a    2017
b    2018
c    Estimate.
d    Calculated by the UN Statistics Division from national indices.
e    2016
f    Data classified according to ISIC Rev. 3.
g    2014
h    Data refers to a 5-year period preceding the reference year.
i    2015
j    Data as at the end of December.
k    2013
l    2011
m    Excluding business enterprise.
n    Excluding private non-profit.
o    2004
p    2001