a    Projected estimate (medium fertility variant).
b    2019
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    2020
e    Excludes irrigation canals and landscaping care.
f    Includes irrigation canals.
g    Excludes publishing activities.
h    Excludes repair of personal and household goods.
i    Estimate.
j    Industrial workers.
k    Data refers to a 5-year period preceding the reference year.
l    Including refugees.
m    Data as at the end of December.
n    Data refer to fiscal years beginning 1 April.
o    2018
p    2013
q    Data are as at 1 January of reporting year.
r    Population aged 18 years and over.
s    Including nationals residing abroad.