From that moment on, the building began to decline slowly.

Time went on, and the boy's health still slowly declined.

It has a population of 406, which is slowly declining.

But she added that they would probably decline slowly over the next four years.

It slowly declined over the course of the 20th century.

The species was probably declining slowly since the mid-19th century.

The script began to decline slowly after the 9th century.

The population declined again in the 1980s, and has continued to slowly decline.

The high school's enrollment has been slowly declining for some time.

The number of jobs for human resources assistants is expected to decline slowly through the year 2018.