decline in something

The number of workers involved declined from 13,639 to 927 in the same period.

During the years after 1844 his work declined in quality.

However, his form declined in a space of just six months.

The park began to decline in the late 1960s and early 1970s.

They declined in use from about the middle of the 6th century.

But the number has not declined further in the last two years.

His health had declined in recent years but no cause of death was given.

As a result, business activity declined in the 1980s and 1990s.

As a percent of the total, it declined in 1996.

It then declined to a population of 960 in 1966.