Yes, I’d consider the midwestern region where it’s available to be “a lot of the US”, even if it isn’t the most common way to get it nor the most populous region. I never said it most people use it, just for the record, so the 14 year old production statistics don’t actually matter here (I’m not faulting you for it being really old, I couldn’t find much for that metric either, but it’s irrelevant either way). It is, however, readily available and commonplace.

It’s mostly distributed, at least what I know of, by kwik trip/kwik star which (heavily) cover Wisconsin, Minnesota, Michigan, Iowa, Illinois, and North Dakota. It’s certainly regional (and frankly im curious if Alaska tends Canadian in that regard), but that’s 6 states with a decent landmass and population, so yes, I’d consider that a lot, since it’s almost certainly not the only option in the US, just the one I personally know of.