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 Crude rate of natural increase (%)
Characteristic Description
Name Crude rate of natural increase (%) by Place of residence (NUTS - 2002); Annual
Regularity Annual
Source Statistics Portugal, Demographic indicators
First available period 1992
Last available period 2013
  • Data reference period
  • Place of residence (NUTS - 2002)
  • NATURAL INCREASE:  The difference between the number of live births and the number of deaths occurring during a given period, usually a calendar year divided by the mid-year population of that period* (usually expressed per 100 (10^2) or 1000 (10^3) inhabitants).
  • AVERAGE POPULATION:  The average population during a calendar year, generally calculated as the arithmetic mean of the population on two consecutive years.
  • REFERENCE PERIOD:  The length of time for which data are collected, e.g. a specific day, month or year.
Formule RNI=[SN(t-1, t)/[P(t)+P(t-1)]/2]*10^n

P(t)=Population at moment t;
P(t-1)=Population at moment (t-1);
NB(t-1,t) = Natural balance between the moments (t-1) e t;
n=2 ou 3.
Measure unit (symbol) Percentage (%)
Power of 10  0
Last update date 16/06/2014

information presented in 6/2/2023