My guess is that aluminium foil is indeed negligible in the big picture. But of course, I don't really know how accurate the original statistic is, either, nor

My guess is that aluminium foil is indeed negligible in the big picture. But of course, I don't really know how accurate the original statistic is, either, nor do I know the distribution of aluminium for different uses. I imagine a lot of the metal is to be found in aircraft, which are of course pretty long-lived objects.