I figure it's a re-release or something old that was never released previously -- definitely not a new song. Perhaps it's kind of like that Elton John song, "Are You Ready for Love" from the '70s, that was re-leased two years ago.

Yes, my year had The Knack. Sad, ain't it? Of course, we also had "YMCA" and "In the Navy" in the Top 100, so I guess there are some amusing saving graces. ;)