USAA is who I was talking about.
I had 5 @ 4-wheel vehicles and a motorcycle insured with them at one point, with more than the bare minimum coverage plus a $500 deductible.
Also, I've been with USAA since 1984. 
I'm down to one vehicle now. Last year's distribution was $289.86 (Dec 6, 2018).
My expectation of what's "usual" needs adjusting now that I'm not paying for 4 drivers.
Follow-up. I just got my deposit from USAA: $657.51.

I also didn't go into detail on how that whole thing works.
They set up a "Subscriber's Savings Account" with each policy holder. At the end of each year, they determine what they can refund to the customers.
Once your account exceeds a certain level, they THEN start sending a check/direct depositing the "additional overage" amount.
So, it might take a year or three for your account balance to exceed the point where you actually get a refund. All depends on how well they did in a given year, and how much you are paying in premiums.
The remaining balance in each customer's "savings account" is invested to generate more revenue or as a "buffer" in years where claims are higher than premiums and investments alone cover their costs.
Hope that helps.