Song and/or artist please?

[chappie]

Think it is an old song. The lyrics go something like this:

Yes I know you're hungry and we've got food to spare
We're throwing our surplus food away but don't think we don't care
We can't afford to send the stuff to the places where you are
But you can thank your lucky stars, there's someone somehere much worse off than you are

Thanks for any replies.