Use PowerBI against Playback Database

The included reports are fine, but I would like to create custom PowerBI reports and visualizations of my data.  However, the data in the Playback Database is compressed and inaccessible.  Is there a way to access the data I already collected and use in custom reporting?  I'm thinking something as simple as windows disk space growth report ... the data is already there but I want to see and interact with it using PowerBI.