Call 'em and see. I bet whatever is marked in the bag is right, or darn close.
I'm using hops that I bought several years ago. Stored in the original packaging (opened, and then closed back up but not sealed) in a ziplock freezer bag in my deep freezer. I always back-off the AA numbers a bit because of the age, and quite often I get my beers a little too bitter because the hops aren't as deteriorated as I thought. They still smell good too, I'm boiling some right now.
I'm sure HD stored their hops a lot better than I do.
Edit: the website says AA 12.8. Is that what the bags are marked, or are they marked something 14-ish?