From Creative Commons:

Since 2014, CC has published an annual State of the Commons report that tracks the growth of CC-licensed content on the web. Last year, we reported a milestone of 1 billion CC-licensed works in the commons. This year, we are shifting our reporting focus to align with our new strategy. 

We are opening a public call for submissions of commons content, its creators, and the creative uses that have resulted. 

The submission form is below and asks for the relevant details we need to start visualizing an impactful statistic tied to real use. Strong submissions include all three features of the Creative Commons story: 1) the creator/entity and the choice to openly license, 2) the user and the act of adapting and remixing, and 3) the resulting positive impact for a broader public.