I'm looking for some data on the general frequency in which anonymous edits are made to the User: namespace on the English Wikipedia, and how often they are reverted. Outside of the occasional edit made when logged out by accident, these edits are generally not productive and I'd like to know what kind of magnitude we are looking at. This is also relevant to issues of vandalism and harassment, which is known to occur on user pages from anonymous editors looking to provoke another person.
Not sure if it's easier to break these numbers down by year, but I don't think a month-to-month comparative analysis is necessary. Just looking to get a sense of the general frequency. Thanks!