In one year alone, from 1996 to 1997, the rate dropped 4 percent.

By the end of 1987, the rate had dropped to about 6 percent.

In 2009 the rate had dropped still further to 6.4 per 1000.

The rate of population growth is dropping and has been doing so for years.

The rate dropped back to 6.8 per 1,000 in 2003.

In 2000, the rate dropped, to 38 per 100,000 for that age group.

Once they'd gone through a door, however, those rates dropped.

The rate has already dropped from a peak of 23 percent in 1974.

For longer articles, though, the rate dropped to less than 10 percent.

The rate on both cards recently dropped back to 16.98 percent.