By Joseph Adinolfi and Greg Robb

The legendary central banker led the Fed for nearly two decades

Alan Greenspan, a legendary central banker who led the Fed for nearly 20 years, has died.

Alan Greenspan, the legendary central banker who spent nearly 20 years as chairman of the Federal Reserve, has died. He was 100.

Greenspan's wife, Andrea Mitchell, the chief Washington correspondent and chief foreign affairs correspondent for NBC News, shared the news of her husband's death in a statement provided to the network. The couple was married for 29 years.