Up to 15 months...
If your June contribution(Which is actually credited in July) is not credited yet, you wont see July option..
When it is credited then u will get July 13 and that's 15months..
ehhh how come u count 15 months?
cos i only manage to select may 12 to jun 13..which is 13 mths?
if got july 13 record, still add up is only 14 mths?