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D-Explanatory Notes on Main Statistical Indicators |
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Total
Population refers to the total number of people alive at a certain point of
time within a given area. |
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The annual statistics on
total population is taken at |
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Urban
Population and Rural Population There are two definitions. The first
definition (according to the administrative organizational system): |
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City population: Total population
under the jurisdiction of city (including population of the town under the
jurisdiction of city. excluding the population of counties under the
jurisdiction of city). |
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Town population: Total population of
town under the jurisdiction of county (excluding the population of town under
the jurisdiction of city). |
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County population: Total population
of country under the jurisdiction of county). The second
definition (classified by the permanent population): |
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City population: Total population of
districts under the jurisdiction of city with district establishment and the
population of street under the jurisdiction of city without district
establishment. |
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Town population: Total
resident-committees population of towns under the jurisdiction of city
without district establishment and the resident-committees population of
towns under the jurisdiction of county. |
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County population: Total population except city population and
town population. |
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Data
from 1952 to 1980 are the figures according to the first definition. Data
since 1982 are the figure according to the second definition. |
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Birth
Rate or (Crude Birth Rate) refers to the ratio of the number of births to
the average population during a certain period of time(usually a year) which
is often expressed in‰. The following formula is used: |
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Number of Births Average/ Number of Population |
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Number of births refers to
live births i.e. the births when babies had showed any vital phenomena
regardless of the length of pregnancy. |
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Annual Average Number of
Population is the average of the number of population at the beginning of the
year and that at the end of the year. Sometimes it is substituted for with
the mid year population. |
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Death
Rate(or Crude Death Rate) refers to the ratio of the number of deaths to
the average population (or mid year population) during a certain period of
time (usually a year) which is often expressed in‰. The following
formula is used: |
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Death Rate umber of Deaths |
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Number of Deaths/ Annual Average Number of Population |
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Natural
Growth Rate of Population refers to the ratio of natural increase in
population(number of births minus number of deaths)in a certain period of
time(usually a year)to the average population(or mid year population)of the
same period which is often expressed in‰. The following formulas
are applied: |
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Natural Growth of
Population |
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Number
of Births-Number of Deaths / Average Number of Population |
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Natural Growth
Rate of Population=Birth Rate-Death Rate |
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Employed
Population refers to population aged 15 or over engaging in social labour which
generates income. |
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Unemployed
Population refers to population aged 15 or over not engaging in any social
labour which generates income,
including students enrolled in schools, house wives students waiting for entering schools
with higher level, urban job seekers, retirees, job quitters, disabled, etc. |
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Total
Dependency Ratio refers to the ratio of number of dependents to the
total population aged 15-64,the number of dependents
being population aged 0-14 and population aged 65 and over. The total
dependency ratio is calculated as follows: |
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Total Dependency Ratio=Number
of dependents/ Population aged 15-64 |
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The
Aged Dependency Ratio refers to the ratio of the number of the aged
population to the total population aged 15-64, the aged being population aged 65 and over. The
aged dependency ratio is calculated as follows: |
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The Aged Dependency Ratio=Number
of the aged population/ Population aged 15-64 |
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The
Juvenile and Children Dependency Ratio refers to the ratio of
the number of the juvenile and children to the total population aged 15-64, the juvenile and children being
population aged 0-14. The juvenile and children dependency ratio is
calculated as follows: |
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The Juvenile and Children
Dependency Ratio=Number of juvenile and children /Population aged 15-64 |