I bet a year's salary that if you take a look at the statistics over the past 1-5 years and made data of the join dates of new members and/or amount of posts made at what times, it would make an S-shaped curve and our current statistics would be a part of the stabilized period, if not the decline, and will probably be for the rest of the year.
Unless there are significant events happening on other websites (DDoS attacks, FA, dA, or Ferzu being a pain-in-the-neck, ect.) that cause those members to mass-migrate here, the unaffected populous, I predict this site to grow at a very gradual incline around 2018 and then taper off again in a few months, tops, or until those other sites gain back the trust of their members (which most of them are long-term and loyal). We might actually see another decrease.
However, I think if we make a remarkable effort to post in the more social boards on the forum (Introductions, General, R&A, roleplay) it will send the message to any new users that we are active and engaged, even if we're small in number, and probably speed up the process of an incline a notable amount, even if it takes time.
It's just a prediction, though. Human nature on a graph is a lot harder to analyze than populations of leucospermum.
Christ, I have to get a life.