How big of a raise should you ask for?
Answer

A: If your company is profitable, ask for a pay increase that's comparable with industry standards. According to Mercer, a global consulting firm, the average raise in base pay is expected to be 2.9% in 2014, modestly rising from 2.8% in 2013 and 2.7% in 2012 and 2011.

Source: http://www.mercer.us/press-releases/1539840