One of the most striking findings? The category entitled "Nones"--those who claim no religious affiliation--has grown from 8% in 1990 (when the first survey was completed) to 15% in 2008. For those of you not good with math, that means the dechurched category has almost doubled in less than 20 years.
At the same time, non-Catholic Christians have declined by a significant margin.
The article offers provocative quotes from dechurched people along with good insight on the trends from the last 18 years.