More information is available at the community portal. You may ask questions at the help desk, village pump or on IRC channel #wikimedia-commons (webchat). You can also contact an administrator on their talk page. If you have a specific copyright question, ask at the copyright village pump.
Re: Android Version History
Hi Daniel, The source of the data is the Android developer dashboard. I found historical data from sites linked to in the graph this is a derivative of File:Android_historical_version_distribution.png. Regards --Fjmustak (talk) 17:20, 7 November 2013 (UTC)