Yet in the past 40 years its number has dropped by 1.6 million.

The market value of the four had dropped by $1.9 billion in the week.

The number dropped by four percent from 1980 to 1988.

The guy who had dropped by my place was still ahead of us.

The population was 1124 in 1981, but had dropped to 963 by 2001.

The work force soon dropped by 40 percent, to 730.

The economy has dropped by almost 40 to 50 percent.

Its population has dropped by a third since the middle of the last century.

Its population of young families dropped by about 20 percent in the 1990's.

Well, the reason I dropped by so early and all is.