But when the Internet boom went bust in 2000, revenue plunged and bad debts rose.

At the time it said that revenue from its American operations had plunged by 31 percent, or $550 million for the year.

After the recession of 2001, revenues plunged about $100 billion below what could be explained by slower economic growth and higher unemployment.

As revenues plunged, Mexico had to cut its budget twice.

But after the attacks, revenue per seat mile plunged 40 percent.

Within two years, revenues on Wall Street plunged $600 million.

But that gain was in comparison with an extremely disappointing summer of 2003, when revenue plunged.

It said revenue for the quarter plunged 40 percent.

The kingdom's monthly revenue has plunged by $10 billion from levels of a year ago.

The main reason for deficits, however, is that revenues have plunged.