a    Projected estimate (medium fertility variant).
b    2019
c    2018
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    Data refers to a 5-year period preceding the reference year.
k    Data as at the end of December.
l    Data refer to fiscal years beginning 1 April.
m    2017
n    2014
o    2016
p    2013
q    Data are as at 1 January of reporting year.
r    Higher Education only.
s    Break in the time series.
t    Arrivals by air.