Well, it's a pattern across the whole world, and as far as I know it's not just based on police statistics, but also on interviews of people ("Have you been a victim of crime in the last 12 months", etc). Sociologists are basically baffled. It's been seriously suggested that removing lead from petrol may explain at least part of it.
Anecdotally, both my sister (burglaries) and I (theft from cars) were victims of crime a lot in the 80s and 90s, but hardly ever since [touches wood]. Burglary has gone out of fashion because (very crudely) people don't have video recorders and TVs are cheap in real terms, and since Covid nobody has cash either.
Theft from cars has dropped because every car has a radio/satnav built in. Theft of cars has dropped hugely, apart from high-end ones stolen to order, because immobilisers are pretty good. I remember in the 1990s in Swansea when 90% of all TWOCing in the town was done by two scrotes. When they were both in YOIs at the same time, car theft basically stopped. (Theft of catalytic convertors is a new problem, though.)