greying population
TRANSCRIPT
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Population Structure
• Population structure is the make up of the total population in a country or area where people are grouped by age and sex.
• The graphical technique used to summarise age structure is the population pyramid.
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Interpreting Pop Pyramids
Start at the base – what has happened recently?
Next go to the top – how long do people live for?
Then look at the middle – are there any age groups that stand out? Long / short bars?
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Dependent Population
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Dependent Population
• The dependency ratio is directly linked to a country’s age structure.
• To calculate it, the population is split into economically active (15-64) and inactive (0-14 and 65+)
• Dependency ratio is calculated as a % using:
Number of economically active Number of non-economically active
X 100
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How has the population structure of the UK changed over time?
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How has the population structure of the UK changed over time?
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How has the population structure of the UK changed over time?
Male Female
Population in millions
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How has the population structure of the UK changed over time?
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Ageing populations in the MEDW
• The regressive population structure
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The worldwide distribution of people aged 65 and over
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• http://www.geographyinthenews.rgs.org/news/article/default.aspx?id=298
• http://news.bbc.co.uk/1/hi/in_depth/uk/2004/ageing/default.stm