I'm 10 years in with the same company and I still get a 15%, +/- 5%, raise every year. I don't believe this is normal, though. It's a smaller company, and I'm the lead developer.
I mean, if your current employer will do it and you're happy then why jump? I don't think 10% bumps with the same employer is the norm, but I do think it is when switching jobs as original comment suggested (until you hit median)
do you mean even while staying with one employer, or by jumping to a new employer?