Using ABS data (scenario B) I looked at how population in Australia is predicted to ebb and flow. Well, not really ebb…just flow.
The blue is male population, and the pink is female. Each cell represents the size of an age group over time. Ages represented are from 0 to 100+. Data is for 2012 and projected out until 2100. The size of the cell represents the population for that age group in that year.
Trying to show how structural ageing, as well as numerical ageing, is changing our demographic make-up as a nation. Basically, the darker it is, the more people there are. I like the “streaks” that appear, and I’m guessing I am part of that big streak that stretches from 40 in 2012, right down. Us early 1970s babies were part of the first “echo boom” crop. Not much of is really…but there we are.
Those living over 70…see how it gets darker and darker as time moves on. One of the other scenarios that the ABS puts forward says life expectancy will increase at the same rate (this one says it will keep improving, but not at the current rate; and I think that would be even more dramatic to look at.
My husband calls this the “goldilocks scenario” - A and C are far more extreme in each way. A proposes far less immigration, and B proposes much more. One of them also proposes life expectancy to keep rising at the same rate as it is today - and that gives us a lot more people over 75.
My next task may be to compare each three…but need some time to format the data.