No, not necessarily. The sales stats of any 2000 names over a period of three months would never give you a statically significant result (p-value) in the statistical definition of the term. The number of sales will always be too small. I'm too far removed from stats and econometrics classes, so I won't try to do a model for it
Anecdotally, I've had plenty of slow months followed by a 5x-10 increase in sales over the next few months. Everyone experiences this.
It's also important to consider how long names have been published, if they are continuing to publish names, the prices on the names etc. If the majority of your published names are over really old or really new that will effect things. If you are just selling high priced LLLL names, you won't expect to get a high sell through rate.