Demographic dynamics in Brazil: recent trends and perspectives.

Area of Science:

• Demography
• Population Studies
• Brazilian Population Dynamics

Background:

• Historical Brazilian population size and growth rates.
• Brazilian population age structure evolution.
• Past quasi-stability of Brazil's population.

Purpose of the Study:

• Analyze Brazilian population size, growth rate, and age structure (1940-1991).
• Project future population trajectory until 2020.
• Examine the impact of fertility decline on age structure.

Main Methods:

• Analysis of demographic data from 1940 to 1991.
• Population projection modeling until 2020.
• Comparative analysis of historical and projected trends.

Main Results:

• Detailed presentation of Brazilian population evolution (1940-1991).
• Projected population trajectory up to 2020.
• Significant shift in age structure attributed to rapid fertility decline.

Conclusions:

• The Brazilian population's age structure is undergoing rapid transformation.
• Fast fertility decline is the primary driver of current demographic changes.
• Understanding these trends is crucial for future policy and planning.