a    Projected estimate (medium fertility variant).
b    2019
c    Refers to the localities of the Northern Harbour and Southern Harbour.
d    2018
e    2020
f    Excludes irrigation canals and landscaping care.
g    Excludes publishing activities.
h    Includes irrigation canals.
i    Excludes repair of personal and household goods.
j    Estimate.
k    Data refers to a 5-year period preceding the reference year.
l    Data as at the end of December.
m    2017
n    Data are as at 1 January of reporting year.
o    Population aged 16 to 74 years.
p    Users in the last 3 months.
q    Provisional data.
r    Departures by air and by sea.