Conventional heavy oil is also past its production peak with a future of long-term decline.

For the greater part of the 20th century the private rented sector was in long-term decline.

Pollution is indeed causing harm, the study says, and could lead to a future long-term decline.

The long-term decline of manufacturing has accelerated in the Bush administration.

Their share of the vote has been in overall, long-term decline for decades.

Since then, the annual moving rates have continued their slow long-term decline.

"In a sense the dollar has been on a long-term decline against the mark," he said.

However, this should be done in a way and at a rate that does not lead to the long-term decline of biological diversity.

Thereafter, the town population went into a long-term decline that has continued to the present.

The city has experienced a long-term decline as a production center for television series.