Mushroom broth expired 9/09 - use or lose?

This might be a dumb question, but I'm trying to avoid wasting food if I can - I have a box of mushroom broth (pacific brand) that is unopened and says it expires in 9/09. Anyone think it might still be good? I've used some of the boxed broths after the expiration date and it was fine, but never so long after...

Thanks!