U.S. business travel will fall 15 percent this year to $85 billion, according to PhoCusWright's U.S. Corporate Travel Distribution report

. "While corporate travel has historically comprised approximately 40 percent of the total travel market, this share will decrease as the fall-off in corporate travel demand far outpaces the decline in leisure/unmanaged business travel," according to a PhoCusWright statement. "Corporate travel share of the total travel market will drop markedly from 39 percent in 2007 to 35 percent in 2010."