Yes we have steep decline and we have a reason for that... actually our two very active members got banned
NoorulHuda and second was
Cosmic Beyonders.
Ah yes, I remember @NoorulHuda being one of the most active members across all local boards so no surprise that your numbers went down drastically when he got banned.
Anyway now we are back to the original 300-400 posts... it's ok with less noise and more constructive discussions.
Those numbers are still imho good enough to get your own local board. After all, I think that theymos will look into quality of those posts as well, if he decides to consider giving you local board so lower amount of posts doesn't necessarily has to be a bad thing.