I found this surprising as well. Here's the actual report, which the Guardian did not think to link:

https://www.safetyandquality.gov.au/publications-and-resourc...

OK, I have to admit I'm surprised it's that high. As you'd expect, it's heavily biased towards the elderly. It's good that a light is being shone on it.

But the article is written as if Australia is some kind of global prime suspect in driving resistance trends, and I continue to doubt whether that is actually the case.