The accelerating decline in the Ceridian trucking index is troubling because it should reflect how many 60, 000-pound trailer loads are actually moving from place to place.

FORBES: Recovering Economy? Not If You're Counting Truckloads

More menacing to Iran's future is the accelerating decline of its oilfields.

FORBES: Magazine Article

American manufacturing lost more than two million jobs during the recession, accelerating a decline that had begun long ago in the 1970s.

BBC: American manufacturers come back home