And oil prices have tumbled since the eve of the Iraq war.

The dollar has tumbled since that report, issued last Friday.

Land prices have been tumbling since the collapse of stock and real estate values in the early 1990's.

The price of gas at the pump has tumbled since midsummer.

Crude oil prices tumbled yesterday to their lowest levels since April.

Many German shareholders, however, are angry that the value of their stock has tumbled by more than half since the days soon after the merger.

Records have tumbled since the venue change with records set in 2009 and 2010.

Shimizu, another big construction concern, has tumbled 10.6 percent since July 1, to 805 yen.

Beef prices tumbled to their lowest levels since December 1991, as rich supplies weighed on the market.

Heating oil tumbled to its lowest level since early March, in reaction to further evidence that winter supplies are ample.