First, the parent implies it decreased, not stayed the same. Second, are you sure? Everything I can find indicates that the Big Mac slightly increased (and fur

First, the parent implies it decreased, not stayed the same. Second, are you sure? Everything I can find indicates that the Big Mac slightly increased (and further, the "Big Mac index" is a meme, which may dampen increases for image reasons), and everything else on the menu, on average, increased even more than the Big Mac. Is my data bad?