I gave a presentation at the June meeting of ETCWA (East Tennessee Creative Writers Alliance). Several wanted to have a chance to review the Powerpoint.
The bar that shows the player seems to be cutting off a little off the bottom of the slide, but if you click on the box on the right side (after the volume button) it will go full screen and you can see all the way to the bottom of the slide. There is no sound, as we didn’t make an audio recording. I have just saved the Powerpoint as a video. Also here are the links to the two graphs if you want to see them larger and the other data that is at that website (there’s tons of other statistics there).
$10,000 a year authors statistics (May 2016)
Authors earning $10K up to 1 Mil (Feb 2014 Hugh Howey post)