Accessibility coverage by year (2001-2012)
| Year range | Total # of pubs | # of books addressing accessibility at least once<br /> | % of books addressing accessibility at least once<br /> |
| 2001-2003 | 6 | 1 | 17% |
| 2004-2006 | 14 | 4 | 29% |
| 2007-2009 | 7 | 3 | 43% |
| 2010-2012 | 9 | 3 | 33% |
| All | 36 | 11 | 30% |