Global Finance magazine is out with its annual report cards for the world's most influential central bankers.

The grades, which range from A to F, are based on banker's success in controlling inflation, fostering economic growth, and managing interest rates.

Other factors include the banker's ability to stand up to political pressure and influence government in a positive way.

In what's been an incredibly difficult economic environment, here are the central bankers who have had a steady hand on the wheel.