He said revenues for the site have doubled annually, from $250,000 in 1998 to $1 million last year.

The school was considered a success, seeing its enrollment numbers doubling annually.

Even with the tribes' total profits doubling annually, they control only about 5 percent of the market.

Some estimates indicate that the number of people connected is now doubling annually.

In the early 1970's, for instance, corn and wheat prices roughly doubled annually.

In two years, with a core team of 15 staff, Nutopia's turnover has doubled from £10m annually to £20m.

Last year, 200,000 people were arrested for prostitution-related offenses, and the number has been doubling annually in recent years.

Foreign investment probably doubled to 20 million guilders annually.

By 1980, sales were doubling annually and three million homes had Atari consoles.

What's Involved Laser vision correction is a major growth industry, with the number of patients nearly doubling annually.