a    Projected estimate (medium fertility variant).
b    2015.
c    Amsterdam is the capital and The Hague is the seat of government.
d    2016.
e    Data classified according to ISIC Rev. 4.
f    Estimate.
g    2014.
h    Data refers to a 5-year period preceding the reference year.
i    Data as at the end of December.
j    Total health expenditure does not include capital.
k    2012.
l    Decrease due to operator updating their records to exclude inactive subscriptions.
m    Data as at the end of July.
n    Users in the last 12 months.
o    Population aged 16 to 74 years.
p    Provisional data.
q    2004.
r    Development Assistance Committee member (OECD)