3 Dependency Load Dependency Load: % of the population under age 15 and aged 65 and overwe can see a country’s dependency load by graphing the data – population pyramid
4 1. Population PyramidAllows you to graph the number of males and females in a country by age groupsWe can see the % of younger & older people within the populationUses horizontal bar graphsLeft side of graph is always maleRight side of graph is always femaleUse different colours for each sex
8 2. Canada’s Changing Population Structure Look at Canada’s population pyramid from 1956Why do you think Canada had a rapid population growth during this period?
9 3. Rapid Population Growth in 1950’s Post-WWII:1. Many immigrants coming into the country2. People were having moderately large families3. Canada was in the midst of a “baby boom”Babies born btw 1946 and 1961 are referred to as “baby boomers”
10 4. Comparing 1956 and 2004 (pg 190)What do you notice about the size of their dependency loads?Both pyramids have high dependency loads, but since 1956…% of children decreased% of elderly increased
11 5. Impact of High Dependency Load In 1956:Emphasis on providing schools for growing number of kidsIn 2004:Little need for new schools, except in some new suburban areas (Some schools are even closing down)Those in gr. 1 in 1956 were now 54 yrs oldNeed to shift Canadian society’s focus to provide services for older populationBrainstorm: How will you be affected by Canada’s dependency load (large aging population) in the future?
12 What does Canada’s aging population mean for Canadian Society What does Canada’s aging population mean for Canadian Society? Brainstorm.Part of Canadian SocietyHow Canada’s aging population will affect it:HealthcareHousingThe people available to work (the work force)Job opportunities for younger CanadiansThe sorts of things Canadians will want to buy
13 4 Types of Population Pyramids We can tell a lot from the shape of a population pyramidExpansive — a wide base, meaning a high proportion of children, a fast rate of population growth, and a low proportion of older people.Stable — a structure with indentations that even out and reflect slow growth over a period of timeStationary — a narrow base and roughly equal numbers in each age group, tapering off at the older ages.Declining — a high proportion of aged persons and declining numbers.
14 1. Expansive (wide base) wide base: lots of children = high birth rate high death ratefast rate of population growthFew older people
15 2. Stable (wide middle) Slow growth over a period of time High birth rateDecreasing death rate
16 3. Stationary (equal numbers) a narrowing base - fewer children = drop in birth rateroughly equal numbers in each age group, tapering off at the older ages.
17 4. Declining (narrow base) Birth rate declines to point where it’s close to death rateHigh number of aged peopledeclining numbers in population