But the plane fell into a steep decline in the last few years.

This is most probably a cause of such a steep decline.

These rise high enough, and then go through a steep decline, falling back into the water.

However, Nancy never gets better and her health takes a steep decline from there.

The newspaper began a steep decline in the late 1940s and early 1950s.

It suffered a steep decline in population and economic activity during the 17th century.

More recently there has been a steep decline in the support for political union.

And beginning last August, these sales went into a steep decline.

By the turn of the 20th century these industries were in steep decline.

By the late 19th century the village was in steep decline.