Well, given that the "I'm still alive and data is coming in" post is from over 9 years ago, I wouldn't be optimistic.
I'd suggest you write to Charles directly and ask him. His email is available at the link you provided.
I spoke with Chuck about this very subject several years ago. His response was that he came to realize that with as many cents as there are in current circulation it would be virtually impossible to get a high enough percentage of them for the results to be of any statistical value. The project was scrapped
Figured, but thanks for the first-person account. I use the site for quick reference for small vs. large dates.