By this measure we may be going through a period of precipitous decline in the world's cultural diversity.

By 1970, the population had fallen to 79, and it continued its precipitous decline to 33 in 1980.

There was also a precipitous decline in the boss himself.

After the 1960s, however, the neighborhood entered a period of precipitous decline.

They showed 927 girls for every 1,000 boys under age 6, a precipitous decline from 962 girls 20 years earlier.

But with the dot-com collapse, Sun went into a precipitous decline.

During 1997 and 1998, a precipitous decline occurred in the catch (see the graph on the right).

And the 1,200 murders expected this year represents a precipitous decline from the 2,245 reported in 1990.

From a high in 1990, the crime rate went into precipitous decline.

By the 1960s, the building had begun a precipitous decline.