I don't know. My goal is to establish some baseline of fact and perspective before I start opining on causal relationships.
Thank you for the link. I'm having trouble locating the national rate for 2020 -- Most reports seem to be from a sample of a few dozen cities. Maybe it takes more time to report the nation data?
A %30 YoY increase is a dramatic increase, but also seems to be considerably lower than a few decades ago, if I'm understanding correctly?