A list of all ~250,000 Wikipedia disambiguation pages and how many "may refer to" links they had as of May 2014. Data is available in .csv format, file layout is:
title, url, rank, number of list items, number of sections (e.g. "Arts", "People", "Sports", etc.)
Data was collected with the Rap Genius trackback scaper
More info at http://toddwschneider.com/posts/what-is-the-longest-disambiguation-page-on-wikipedia/