a    Projected estimate (medium fertility variant).
b    2015.
c    Estimate.
d    Index base: 2003=100.
e    Break in the time series.
f    Series linked to former series.
g    2014.
h    2016.
i    Data refers to a 5-year period preceding the reference year.
j    Including refugees.
k    Data as at the end of December.
l    Data revision.
m    2004.
n    2001.
o    2002.
p    2000.
q    Arrivals by air.