[komlenic]

This is one of those questions where people tend to reply with semi-snarky advice like "as much as you can get" or "it's relative". And they are right in a sense.

Still, based only on my own past experience (assuming your review is a positive one) I'd say 4%-5% is fair... more than that seems like a clear reward and message that "we need to keep this person", and less than that seems like "eh, here's something".

EDIT: As to your second q: knowing what similar people in your industry and area are being paid might be a good figure to know (and if you can do it tactfully, bring up) - but being able to point out some of your accomplishments in the past year that the reviewer may not remember or be aware of will probably get you farther.