http://www.msnbc.msn.com/id/20381678...oks-last-year/ This poll, from 2007, claims that 1 in 4 adults read no books in the past year. That means 3 in 4 did adults did read a book. It also claims that older people are less likely to read books. If the educational system was really as dire as some claim, it would be the younger people who were not reading. E-readers are popular with older people, and this could reverse some of the trend of not reading, as they can make the text as large as they want.
I keep seeing claims that 80% of adults hadn't read a book in the previous year, but they tend to be poorly cited.