1.   Real estate prices have doubled in value over the last decade.

2.   Analysts said U.S. stocks are particularly susceptible to mounting troubles in Asia because share prices doubled in the past three years.

3.   And those prices can double again when the truffles are resold in this country.

4.   Any harm to the crop there could cause futures prices to double, traders say.

5.   At the time, oil prices doubled.

6.   At one point, energy prices doubled within a year.

7.   Both companies have surrendered virtually all of the gains they made this summer, when their share prices doubled on rising aluminum prices.

8.   But its stock price has doubled since January, making it too costly for Madden.

9.   But within the first year, prices almost doubled.

10.   California, says Norris, is on the cusp of a boom market that will see housing prices double in the next eight years.