The area experienced serious economic decline from the late 1950s.

The community experienced a serious decline in the 1970s as a result of immigration.

However, during the late 1980s, a much more serious decline set in.

It is a sign not only of a serious decline in the service itself.

The mine went into serious decline after 1985 and eventually closed in 1998.

The neighborhood went into serious decline in the 1960s, and has not recovered.

The result was a serious decline in overall agricultural production.

And by the fifth day the empire was in serious decline.

But in less than 10 years, the community started to go into serious decline.

That industry has been in serious decline for the last 30 years.