Searched for https://m.facebook.com/?refsrc=https%3A%2F%2Fde-de.facebook.com%2Fpolicies%3Fref%3Dpf&_rdr 
Note: This calendar view maps the number of captures of https://m.facebook.com/?refsrc=https%3A%2F%2Fde-de.facebook.com%2Fpolicies%3Fref%3Dpf&_rdr, not how many times the site was actually updated.
Look Up URL in general Internet Archive web collection.