The US recovery from the coronavirus-linked recession has been more robust than expected, a top Federal Reserve policymaker said on Tuesday, though he added it could be about three years before the economy regains its strength.

“We want to get back to maximum employment as soon as possible,” New York Fed President John Williams said, adding that the economy would be strong and close to full employment “in about three years time.”

Still, he added, “there’s clearly a lot of unknowns” about the next few years.