a    Projected estimate (medium fertility variant).
b    2015
c    Refers to the Delhi metropolitan area that is not restricted to state boundaries (National Capital Territory), includes contiguous suburban cities and towns, such as Faridabad, Gurgaon, and Ghaziabad.
d    2017
e    2016
f    Data classified according to ISIC Rev. 4.
g    Estimate.
h    Industrial workers.
i    Data classified according to ISIC Rev. 3.
j    Twelve months beginning 1 April of the year stated.
k    2014
l    Excluding military goods, fissionable materials, bunkers, ships and aircraft.
m    Data refers to a 5-year period preceding the reference year.
n    Including refugees.
o    Data as at the end of December.
p    Data revision.
q    Data refer to fiscal years beginning 1 April.
r    2013
s    2003
t    2004
u    Excluding nationals residing abroad.
v    Including nationals residing abroad.