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Population Structure Revision |
Global Population |
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Population Pyramids |
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Stage 1 |
Stage 2 |
Stage 3 |
Stage 4 |
Expansive. |
Expansive. |
Stationary. |
Contractive. |
Concave sides. |
Straight sides. |
Convex sides. |
Convex sides. |
High birth rate. |
Still high birth rate. |
Declining birth rate. |
Low birth rate. |
High death rate. |
Falling death rate. |
Low death rate. |
Low death rate. |
Short life expectancy. |
Slightly longer life expectancy. |
Long life expectancy. |
Longer life expeactancy. |
Rapid fall in each upward age group due to high DR. |
Fall in DR so more people living into middle age. |
An increasing proportion of the population is in the 65+ age group. |
Higher dependency ratio. |
Kenya |
India |
Argentina |
Sweden |
Economic development increases >>>> |
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The Demographic Transition Model |
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