Wall Street’s cash bonus pool rose 8 percent to $20 billion in 2012, according to projections by New York state Comptroller Thomas DiNapoli.

Employees took home an average cash bonus of almost $121,900 last year, DiNapoli, a 59-year-old Democrat, said today in a conference call with reporters.

“Wall Street is still in transition, but it is slowly adjusting to changes in its economic and regulatory environment,” DiNapoli said. “Profits and bonuses rebounded in 2012, but the industry is still restructuring. Despite its smaller size, the securities industry is still a very important part of the New York City and New York state economies.”

JPMorgan Chase & Co. reported its third straight year of record profit for 2012, and Goldman Sachs Group Inc., the fifth-biggest U.S. bank by assets, said full-year net income rose 68 percent. Bank earnings have been buoyed by a surge in mortgage fees and gains in investments.

In fiscal 2008, Wall Street accounted for more than 20 percent of New York state’s tax revenue and 12 percent of New York City’s. By fiscal 2011, those percentages had dropped to 14 percent and 7 percent, respectively, DiNapoli has said.