1.   When Clark Gable removed his shirt to reveal a bare chest, sales of undershirts plummeted.

2.   Argentina has been struggling to protect its automotive market, which has been weakened by a two-year recession that has caused car sales to plummet.

3.   A product unit at a global computer company had seen sales plummet dramatically.

4.   After a half-decade of growing interest in this nascent fund category, sales plummeted.

5.   Agha has heard that burka sales plummeted in Kabul.

6.   All of which has caused season-ticket sales to plummet.

7.   Bristol-Myers Squibb Co. has yet to overcome the blow it took when sales of heart drug Capoten plummeted after its patent expired last year.

8.   But European computer sales have been weak for much of the year, and now computer PC sales are plummeting.

9.   But SmithKline lost its patent protection for the drug last May, and sales have since plummeted because cheaper generics have come onto the market.

10.   But then sales plummeted so far that even President Franklin D. Roosevelt was concerned.