The Help Surprise

I am a little bit confused by this, but I have the book The Help from the library. It was suddenly on hold for me, after looking like I still had to wait for over 100 people to get it. Now I am wondering, how did this happen. Was that big number of people waiting for the book wrong? Does the library inflate this number, or did over 100 people simply decide they didn't want to wait any longer? I don't know. I have begun the book, and am excited to have it so much sooner than anticipated.