31.   Affordability helped fuel the boom.

32.   Fueling the boom are more college-age kids, older adults pouring into college, and computers and the Internet that make applying a breeze.

33.   Increased federal highway spending is fueling a boom in road construction.

34.   Japanese investment fueled the boom.

35.   Still, a weak euro has helped lure tourists to Europe and fuel a boom for tourism-related industries.

36.   The boom was fueled by government officials, bankers, the media and alleged experts of every kind.

37.   The economic boom was fueled in part by strong spending in this areas.

38.   The economic boom was fueled in part by strong capital spending.