Page 50 - NGTK2018

is only calculated for internal migration (not including international migration).
Life expectancy at birth reflects the prospect of a newborn could live for how
many years if the current mortality model is maintained, this is the key statistical
indicator of the Life table.
l0
Where: e0 = T0
e0: Life expectancy at birth (unit: year);
T0: Total number of years of the newborns in the Life table
who will continue to live;
l0: Number of persons who live to the age of 0 of the Life table
(the set of original newborns is observed).
Life expectancy at birth is one of the integrated indicators calculated from the Life table.
The Life table is a statistical table that includes the indicators showing the viability of
population moving from one age to the next and the mortality of the population at different
ages. The Life table shows that from an initial set of the births (on the same cohort), there
will be how many persons who will live to 1 year, 2 years, ..., 100 years, ...; among
them, there are how many persons at each of the certain ages who will be dead before
the following age; those persons who have reached a certain age will have what
probability of survival and death; how long is the life expectancy in the future.
Rate of literate population aged 15 years and over reflects the ability of
reading and writing of the population, serves to assess the development level of a
country, region or locality.
This indicator is calculated as the rate between the number of persons aged 15
years and over at time (t) who are literate (able to read, write and understand a
simple sentence in the national language, ethnic or foreign language) and the total
population aged 15 years and over at that time.

Rate of literate population Literate population aged 15 years and over
aged 15 years and over (%) = Total population aged 15 years and over × 100

Singulate mean age at marriage (SMAM) reflects the average number of
single life years of a presumptive cohort that has been lived single life before getting
married for the first time, with the assumption that this cohort’s proportion of single
by age is the same as the one collected at the intercensal time point.

LABOUR FORCE AND EMPLOYMENT

Labour force includes the employed persons aged 15 years and over (currently

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