Hi Eve,
We always take our old ones so our collection "grows" every year. The down side of this though is that my youngest DD insists on getting Minnie's autograph every time we see her and we therefore have hundreds of Minnie sigs!
Don't know whether they change them or not - our ones from 2002 are royal blue with Goofy, Mickey & Donald on the front and a small Tink writing "autographs". Is this the same as your 2001 ones?
It would surprise me if they didn't change them every once in a while!
Karen