Big law firms can expect modest growth in profits and demand in 2016, while the gaps between firms are widening, according to a report released Wednesday by Citi Private Bank and Hildebrandt Consulting.

The most profitable firms have been pulling away from the pack for some time, but the gap is now spreading between firms of a similar profile, said Gretta Rusanow, head of advisory services in the Citi Private Bank Law Firm Group and a co-author of Wednesday’s 2016 Citi Hildebrandt Client Advisory .