I've always wondered - at what level is a person contributing to the Tuna shortage? I rarely eat fish to begin with, have yet to go to a sushi place. But I do h

I've always wondered - at what level is a person contributing to the Tuna shortage? I rarely eat fish to begin with, have yet to go to a sushi place. But I do have a can of Tuna on Pizza about every month. Is that already too much?