Demand for regulatory and enforcement practices and increased billing rates have had a positive effect on the bottom line for law firms in Washington, D.C., in the first half of this year, according to bank survey data from law firms.

The Citi Private Bank Law Firm Group midyear flash survey shows that on several economic indicators, firms in the Washington, D.C., metro area are outperforming industry averages with revenue up 6.7%, compared to the industry average of 4%.