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Crude Birth rate: Crude birth rate is the nativity of childbirth per 1,000 people per year.
Crude Death Rate: Mortality rate is a measure of the number of deaths (in general, or due to a specific cause) in some population, scaled to the size of that population, per unit time.
RNI: Rate of Natural Increase - In demographics, the rate of natural increase (RNI) is the crude birth rate minus the crude death rate of a population. If we neglect the migration, then a positive RNI number means that the population increases and a negative number means that the population decreases.
TFR: Total Fertility Rate - The sum of the age-specific birth rates of women in five-year age groups multipled by five. This rate estimates the number of children a cohort of 1,000 women would bear if they all went through their childbearing years exposed to the same age-specific birth rates in effect for a particular time.
Net Migration Rate: Net migration rate is the difference of immigrants and emigrants of an area in a period of time, divided (usually) per 1,000 inhabitants (considered on midterm population).
Population Period: A population pyramid, also called age-sex pyramid and age structure diagram, is a graphical illustration that shows the distribution of various age groups in a human population (typically that of a country or region of the world), which normally forms the shape of a pyramid.
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