Many companies have annual reviews for their employees. I've heard that it's generally a good idea to muster up some hard data to analyze and bring to the review. The better the data, the better the chances to help support a promotion or raise.

What I mean by hard data, are tangible numbers-- something that can be measured and/or calculated. Obviously data that a developer would have access to.

Something intangible would be how beautiful the code a developer has written. I think this would be very hard to measure, nor would upper management care for it.

My question is: For a software developer, what kind of hard data should be analyzed and brought to a review to help highlight good work that was done?

An example I've been given in the past: The support tickets produced by each project a developer was involved in. Are the numbers low? Are the rate per month getting lower? Etc.