a    Including Abkhazia and South Ossetia.
b    2017
c    2018
d    Estimate.
e    Data refer to 5 cities only.
f    2016
g    Data classified according to ISIC Rev. 3.
h    2014
i    Data refers to a 5-year period preceding the reference year.
j    2015
k    Data as at the end of December.
l    As a result of recent health-care reforms, public compulsory insurance has since 2008 been implemented by private insurance companies. The voucher cost of this insurance is treated as general government health expenditure.
m    2009
n    2008
o    Users in the last 3 months.
p    Population aged 6 years and over.
q    Partial data.
r    Excluding private non-profit.
s    Excluding business enterprise.
t    2004