Population Change Key Definitions

• when the birth rate exceeds the death rate
• expressed as a percentage %
• For example:

Brazil est 2009

BR=18/1000 (18 births per 1000 people)

DR=6/1000 (6 deaths per 1000 people)

NI= 18-6= 12/1000 or +1.2% per annum



• when the death rate exceeds the birth rate
• expressed as a percentage %
• For example:

Italy est 2009

BR= 8/1000 (8 births per 1000 people)

DR= 11/1000 (11 deaths per 1000 people)

ND= 8-11= -3/1000 or -0.3% per annum

• the difference between the number of immigrants (people entering the country) and number of out-migrants (people leaving the country).

• number of deaths per 1000 people in the population per year

• number of births per 1000 people in the population per year

• number of deaths of children under the age of 1, per 1000 live births per year

• average number of years that a person can expect to live

• the change in size of a population, dependant on the relationship between birth and death rates.

• average number of children born to a woman during her lifetime

• the number of live births per year divided by the number of women aged between 15 and 49 in the population