[jshort]

I'd like to see this data over a longer time period. Or compared to a similar time span around the Great Depression. Similarly, I'd like to see data on a global scale. I'd imagine the gap is continuously widening. Markets constantly shift, this may be a second re-adjustment from the dot.com bubble, just the "99 percent" are adjusting as the 1% goes the other way.

[justincormack]

No the gap is not continuously widening everywhere. It rises and falls a lot. There is one measure and a historical chart in this article. http://en.wikipedia.org/wiki/Gini_coefficient