a    Including Zanzibar.
b    2017
c    2018
d    2019
e    Tanzania mainland only, excluding Zanzibar.
f    Data classified according to ISIC Rev. 4.
g    Excludes computer and related activities and radio/TV activities.
h    Estimate.
i    For Tanganyika only.
j    Break in the time series.
k    2016
l    Data refers to a 5-year period preceding the reference year.
m    Including refugees.
n    Data as at the end of December.
o    Data revision.
p    2014
q    Data are as at 1 January of reporting year.
r    Population aged 18 years and over.
s    Excluding business enterprise.
t    Partial data.
u    2013