Thought this article was pretty interesting:

“The average game developer in the U.S. earned just over $83,000 USD in 2013, while Canadian and European based developers averaged a salary of $71,000 USD (up 9 percent from 2012) and $46,000 USD (no change), respectively.”

“Those who hold business and management positions earned an average salary of over $101,000 USD in 2013 – the most of any discipline. Audio professionals and programmers followed closely behind, each earning average salaries of over $90,000 USD.”