I've been at my job 3 years, and my supervisor told me in his 6 years with the company (small company was purchased at that time) the lowest he's seen is 2.5% as the "standard" or "base" raise. Then your performance gets taken into account and you an get more. Our group gets a set pool, and then the supervisors have to duke it out to determine who gets what. I got 3.5% my first year (standard raise, I wasn't eligible for merit based because I hadn't been there a full year), 8.5% my second year and 12% last year. I will add that my supervisor feels I'm underpaid, so he fights for me each year at review time and has tried (but failed) to get me mid year raises. After this last year I finally feel I've caught up somewhat with what I should be making, but it took a nearly 25% increase over 2.5 years to get here!
My fiancé got a 1% raise last year, public university. First increase in years, though he'd only been there less than a year.