Using NSPredicate to segment table by dates in iPhone

Question

I have an array of dictionaries with several jobs. I want to have a table display these jobs sorted by month - year.

How could i divide that array so i end up having for example:

section: july 2009 and the amount of rows for each job in that date. section: august 2009 and the amount of rows for each job in that date. and so on.

Thanks