Hello Madi and welcome to Hubski! Is it safe to assume 'contributions' is a general term or are you looking for something more specific? For example, contributions in so far as posts, donations, and original content, or just posts (or donations, or original content).
I could be out of the loop on the numbers you are asking for, but I think a PM to mk or rob05c could do the trick? For miscellaneous stats and goodies, you can click the "tmi" link at the very bottom of the page.