45% over, 55% under is just right

There's an article in the Daily Mail about a plastic surgeon's quest for the perfect breast (and there's a similar best of the breast story from 2007), so apparently he's quite into his chosen line of work.

This is the type of research that I find particularly appealing. For the current study, the dedicated doctor examined the famous "Page 3" topless girls in the British Tabloid paper The Sun.

Question: how many research assistants would do this work for free?