Are you referring to this post? If so, the reason we can't do it anymore is the member list has been disabled, so we can no longer perform the searches required to come up with those stats.
Yes, thank you very much, that is exactly the list I had in mind. I remember reading it several years ago, and having been fascinated at the time, not just at the actual numbers themselves, but also at the almost extraordinary halving of the numbers of members at each rank which took place as the 'higher' user titles were climbed. Fascinating.
Thank you for your answer, as well as the link; might I ask why the member list has been disabled, if that is not an impertinent question to ask?