April’s figures are the biggest increase in revolving credit in a year

In April, consumer credit increased at a seasonally adjusted annual rate of 7-1/4 percent. Revolving credit increased at an annual rate of 11-1/2 percent, while non-revolving credit increased at an annual rate of 5-3/4 percent.

More info here http://www.federalreserve.gov/releases/g19/current/default.htm