"...GA (as I have always known it) has become unaffordable for the average person and the trend is not looking good going forward..."
While it is likely true that the average person would find it difficult to own, maintain, and fly their own aircraft, it doesn't necessarily mean that they cannot still rent an enjoy flying. it is all about choices; what does it cost to play a round of golf every week? Remember to include the 19th hole fees. How about a Starbucks coffee every day? A case of beer a week? The list can easily get longer.
Point is, flying can still be affordable if you choose to make it so.
That said, GA certainly is not what it was when I was younger; it would seem that to the younger generation, GA is a means to an end (airlines) and not for the joy of flying.
The Australian Bureau of Statistics is a govt run organization which collects and analyzes statistical data, much like your BLS.
It's been publishing a statistical series every quarter since the 1950s capturing mean and median Australian incomes. Or, more precisely, "mean adult pre-tax full-time weekly earnings" with crosstabs breaking it down by various demographics.
We also have less rigorous data about historical GA costs. One datapoint we can use as a proxy for the cost of GA is "hourly wet hire rate for a Cessna 172." They've been available throughout the same period as the income data, and they've been advertised in flying magazines etc across the whole duration, so that's probably at least as good a statistic as anything else.
So you can do a comparison: Pick a magazine ad which depicts an hourly hire rate for a 172, then go back through the ABS's statistical series on incomes at the publication date, and express the cost of hiring a 172 as a percentage of an Australian average weekly income.
And when you do that, the result you get is about 15%, +/- 2%.
Not just now, but always. Throughout the entire sample period, an hour in a Cessna 172 costs between 13% and 17% of the Australian average full-time pre-tax adult income. Some years a little bit higher, some years a little bit lower, but centered on 15% the entire time.
So is GA really more expensive than ever? Probably not. Certainly not at any point in my lifetime. It's never been a cheap hobby, but it's never really been less expensive than it is now.
Plenty of stories about how "When I was starting out I could get a flying lesson for twelve bucks!" without similar emphasis on how you were probably earning $100 per week.
- mark