https://jwkblog.com/wordpress/fire-at-gas-stations-some-fact...
5k fires/year, 61% involving vehicles so about 3k fires/year, presumably from pumping gas.
But given how many billions (or maybe even trillions) of customer-pump interactions per year that’s a really low incident rate.
It would be interesting to see if NJ and OR with no self-serve have dramatically lower rates but I couldn’t find that info.