How does "Vous et nul autre" generate its counts?

I started looking around, found the "Vous et nul autre" entry and ran it. I set the Shared by count to 0 and let it rip. I estimated the number of entries per screen by pasting a couple into Excel and let it count. It was rather consistently coming up with 383/full screen. It said I had 23 screens. I counted the last screen because it was less lines (351). The grand total was 8777. The total count of items I have indexed is 8205.

So what is going on? Just curious more than anything else.

I browsed through the subjects in the group and didn't find anything to explain HOW it counts stuff. I know I have plenty of books that multiple people have. I do have a lot of stuff I know nobody else has. . . old letters, ads, brochures, etc. So when someone gets bored, let me know how the thing figures out its numbers.

Thanks.

I'm seeing 193 per page on your Vous et nul autre page, then 180 on the last page. 193 x 22 + 180 = 4326, compared to 4361 items showing as 1 member on your books list.