Getting User Stats from QA Plugin

We are using the QA plugin for a class and would like to track the number of times a user likes an answer for grading purposes in the classroom. We are trying to correlate the data with an export, but the export fails with over 4K likes in there now (it truncates before it gets to the end). Is there any way you could add reporting to the plugin so an admin could look up stats for a user on a site? Or any other ideas how we might get user usage data for this plugin? Thanks for your help!