Pop3.docx - A population pyramid is a demographic snapshot of a society or state at any given time Number one the sex Divides up the country into male

# Pop3.docx - A population pyramid is a demographic snapshot...

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A population pyramid is a demographic snapshot of a society or state at any given time Number one, the sex! Divides up the country into male and female x-axis – percentage or total number of the population for each one of those brackets y-axis – 5-year age increments. They’re age cohorts. Starting from 0 to 4, 5 to 9, all the way up to 95 to 99 years of age. Brazil 2010: 0 to 4 million Male (0 to 4) – 3.2 million Old brackets are tearing off nicely, getting smaller and smaller every year China 2010: The megatron of planet earth, the biggest population on planet. 13 to 65 million Greenland 2010: 0 to 3 thousands Ukraine 2010: 0 to 2 million Male (30 to 34) – 1.7 million Uruguay 2010: 0 to 140 thousands Male (30 to 34) – 140,000 thousand UAE 2010: 0 to 575 thousands Male (30-34) – 575,00 thousand THREE KIND OF DISTINCT Old bracket – the old people of the society. They are above 50. They don’t have babies, no kids, do not work, not paying taxes Pulling resources from society Bearing bracket – age cohorts roughly 15 up to mid to late 40s, up to 50
Very important because they bear the load of the entire society Bearing children, load economically. The prime time. They take care of the old folks and babies they have. Baby bracket – Under 15 year olds Pulling resources from society When this bracket is wider the base of the pyramid is wider than the bearing brackets, which means those folks bearing the children in the middle, have fertility rate of 2.1, or greater, which is the replacement level. If bearing bracket has less than 2.1, the baby brackets will be smaller. Less wide than the bearing. VERY IMPORTANT to understand to get that it makes three distinct shapes of pyramids which are telling you everything about what is going on in the society. THREE TYPES OF PYRAMID: Classic: shaped like a pyramid aka rapid growth rate pyramid. Base is wider than bearing, hence high fertility. Farmers and are rural, work in factories Longevity = not great Infant mortality = very high Export agriculture commodities, low value industrial, raw resources Ex) Senegal 2010, Madagascar Column (cool) : aka slow/stable growth rate Bearing brackets are having almost exactly a fertility rate of 2.1 replacement level Stable population growth rate (growing slightly or shrinking slightly) Demographic stage – stage 4, late stage 3 Full developed, most people are urbanized, most live in cities, working in service sector, high cost of living, small family size Ex) US 2010
Inverted (intriguing): upside down aka negative growth rate pyramid 35 to 40 and higher, looks like a standard pyramid Inverted because these folks are having less than 2.1 kids Fertility rate is 1.2, meaning every year the bearing brackets are having less kids then those kids get older

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• Fall '08
• JDBOYER
• Demography, population growth rate