Any statistics on how many people are left whose parents were slaves?

Question:

Any statistics on how many people are left whose parents were slaves?

I read an obituary yesterday for Moses Hardy, who died on December 9, 2006, at the age of 113. He was the last black American veteran of World War I. The article noted that both of his parents had been slaves. I was wondering if anyone knows of any agency, historical record, or other source that maintains updated statistics on how many people might be left whose parents were slaves? There can only be very, very few of them, if any -- Mr. Hardy's father was born in the 1830s, and would have been in his late 50s when his son was born.

Best Answer - Chosen by Asker: I suppose there could be a few. A slave child born in 1865 could have had a child as late as, say, 1920. That child could still be alive.