Wall Street bonuses surged 31% last year on rising markets and a rebound in dealmaking activity, delivering a boon for the industry’s hometown economy. Some are already wondering how long it is going to last.

Another wipeout slammed Wall Street as worries built about a potentially toxic mix of worsening inflation and a U.S. economy slowing because of households afraid to spend due to the global trade war.

Wall Street banker bonuses rose 31.5% to an average $244,700 last year as dealmaking rebounded, but the boom times may wane as economic uncertainty rises, New York State Comptroller Thomas DiNapoli said on Wednesday.