Maybe this is making a distinction with out a difference but I think the short cut of not saying avg leads to many thinking that literately every X seconds an event happens. I have seen so many news reports that use sloppy wording that leads to this kind of thinking.
I don't think that level of detail is needed for this anyway, though. The point is to make it clear a lot of these things are sold, which can then change the way you think. A programmer may never write an app related to baby food, then see how much baby food sells, then realize it could make sense.
Firearms spending 2/3 of toys?
[1] Something like this?
f(t) = m*t + c