Compared to 2011, 2012 represents an upswing year for the industry; more overall TV anime was being made. In addition to simply seeing more light novel adaptations, we saw several adaptations of finished series (Kotenbu/Hyouka and Chuu2koi) and single novels (Another, Shinsekai Yori). Those four are notable, but not within the LN data I’ve been using for my sample.* Perhaps because of the minor resurgence in the industry, we do see a bit of an increase in the number of series that performed in unexpected ways. The performance of light novels which were adapted in 2012 in relation to the time frame their adaptation aired is charted below. The raw data is on this doc, and can be compared with the 2012 sample for manga.
Fun With Numbers: Anime as Light Novel Advertisments in 2012