I'm not sure if it's been mentioned in this thread, but you can get any month's history out of your AA profile by logging into your account, viewing your summary, then going to this page:
https://www.aa.com/loyalty/profile/a...ryDate=2015-12

Replacing 2015-12 with any month/year combination you want (e.g. 2013-1 for Jan 2013). I'm not sure how far back they'll give you, and the data isn't the prettiest, but it does work.

The only thing that seems to limit what you can see on the website is how many months they decided to throw in the dropdown box on the site.