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  • Crude Measurements

Population Structure

• Important to look at this with other Crude Measurements
• Dependent Populations
  • $\mathrm{\%}\text{ of popl.}\le 15$
    • Connection to Crude Birth Rate
    • Popl. growth
    • Shows previous high fertility, plus potential future fertility.
    • Also economic indicator
    • Otherwise you can invest in technology instead.
  • $\mathrm{\%}\text{ of popl.}\ge 65$
    • Connection to Crude Death Rate
    • Popl. decline
• Independent Populations
  • $15<\mathrm{\%}\text{ of popl.}<65$
• Dependency Ratio
• You can see the spatial data:
  • There are young popl. in developing countries and old popl. in developed.
  • As well as in areas, rural would be older people. Urban would be younger.
• Demographic Momentum:
  • Less parents, more children per family.
  • Moving to more parents, less children per family.
  • It's harder to control popl. just based on Crude Birth Rate. Because previous fertility still needs to play out before your current actions affect anything.
    • Meaning you can have popl. growth, but fertility decline at the same time.
• Ex:
  •