41.   The ballooning number of elderly and the rapid increase in health-care costs have turned the program into a time bomb.

42.   The inflation report buoyed shares of food and beverage companies on hopes rapid increases in raw material costs that had battered profits are over.

43.   The high death toll is in part a result of the rapid increase in the number of flights worldwide.

44.   The increase is driven in large part by a rapid increase in drug costs, analysts and employers said.

45.   The inflation report buoyed shares of food and beverage companies on hopes that the rapid increases in raw material costs that had battered profits have ended.

46.   The population showing the most rapid increase?

47.   The rapid increase in attention-deficit disorder is a striking example of diagnosis creep.

48.   The rapid increase in costs is causing pain throughout the health care system, analysts say.

49.   The rapid increase in debt in recent months is potentially worrisome.