“I get similar numbers in western suburbs of Des Moines, Iowa.”
Des Moines has level 2 chargers in parking garages. No cost.
Actually, there are a number of courtesy chargers within a couple of miles.
The Hy-Vee flagship grocery near me has maybe half-dozen charging stations, and the c-store at the end of the parking area has a few more. Never seen more than 3 in use.
Easy to blow an hour there. Wahlburgers and Starbucks, as well as deli seating.