Investment banking fees surged to a seven-year high of $90.1 billion in 2014, driven by deals in North Asia and Southern Europe, with the huge North American market offering ballast in a sector increasingly expected to see some wobbles this year. Fees for deals done in North Asia leapt 28 percent to $7.4 billion while Southern Europe saw a 29 percent jump to $2.6 billion, data compiled by Thomson Reuters shows.