Lots of "if's", but let's see what we get.

20/mo until November.
30/mo November to January, but we know it's likely going to stay at 20. And the training center usually slows to a crawl over the holidays, so throw December out.

Let's say 25/mo when AA starts picking up hiring for next year (if 800 projected, flow number conservative/arbitrarily chosen number)

60 by end of this year.
25 a month for next year is 300.

I don't know how many of the 824 are left, so I can't guess when it goes back to 20/mo or 35% but I think it should happen by the end of 2016.