That's not how they do it as a rule. They usually report active subscriptions as of the final day of the quarter, i.e. 12/31/12. If a subscription expires on 01/01/13, it'll be active on the 31st and count. Generally you don't just get to pick the best number for this sort of financial reporting.
We'll see though. In fact, they aren't really required to release any subscription information at all, just financials.