<p>What Bill and Alexandre are saying is based on the data provided by the university, the same data available to the Tumblr staff.</p>
<p>I think you should post your question to the Tumblr. They are very good about answering questions ( and using hilarious gifs to do so), so perhaps it would be better for you to pose your question there since you respect that as an authority. </p>
<p>Best of luck to you. </p>