While light novels work a bit differently from manga in several key ways (stronger second-week showings, lower thresholds, etc.), they similarly often see big boosts after and presumably due to from anime adaptations. I collected the light novel sales history of the series to get anime adaptations in 2013 on this doc, and plotted them on the charts below, to illustrate which series did and didn’t get visible boosts.
This post doesn’t cover series with no post-airing releases (Maoyu, Uchoten Kazoku) or no pre-airing releases (Free/High Speed).
Animetics 