The link below from Gizmodo indicates that Greenland lost something like a Trillion Tons of ice in the period of 2011 to 2014. And to give that some perspective check out this quote from the article:
As geologist Hal Wanless of the University of Miami pointed out to me in a recent conversation, sea level was roughly 420 feet lower 18,000 years ago than it is today. At that time, atmospheric carbon concentrations were only 180 parts per million—100 ppm lower than they were at the start of the Industrial Revolution. Now, over less than two centuries, we’ve pushed the atmosphere permanently north of 400 ppm.
“That should be a huge red flag to people,” Wanless said. “That should tell people, hey look, we’ve really done it. We’re really going to initiate some serious ice sheet melt.”