For the second consecutive year, Chicago’s Jenner & Block tops The American Lawyer’s survey of U.S. pro bono legal work and Washington, D.C.’s Arnold & Porter is second, though the business uptick at Am Law 200 firms last year may be reducing pro bono hours generally.

The two firms often hover at or near the top of our survey. Jenner & Block averaged 130.5 hours per lawyer, down from last year’s 175, which was a 20-year high. “Although Jenner did not again reach record numbers for total pro bono hours in 2014, our passion and commitment to pro bono remained unwavering,” said Andrew Vail, co-chair of the firm’s pro bono committee, in a statement.