"Over half the districts cite moderate economic growth or continuing solid levels of economic activity," it said.

Company officials cited continuing growth at the nine-station complex as the reason for the new construction.

Mr. Barnes also cited growth in the company's cellular telephone division as a factor.

The limit was changed to 600 in 2009 - citing recent growth in the city and a loss of landing zones.

In addition, the company cited strong growth in Europe and Asia for the rise.

He cited economic growth that was reported to be more than 6 percent last year, largely because of high oil prices.

But he cited double-digit growth in Europe and Asia as an encouraging sign.

They cited continued sluggish growth in the economy.

"I'm very hopeful that it can be sustained," he said, citing substantial recent growth in wages and salaries.

But it cited double-digit growth in Europe and Asia as a sign of encouragement.