They claim that the decline in population on the plains is accelerating.
If that decline accelerated suddenly it could push interest rates higher and undermine the stock market.
If world oil prices stay low, the decline of production in this country will accelerate, according to experts.
The long-term decline of manufacturing has accelerated in the Bush administration.
His decline accelerated during the last year of his life.
The decline has accelerated in five years, when more than 20 percent of the workers in local department stores have lost their jobs.
In the last few years the decline has accelerated, stirring concern among Government and business leaders.
As this decline accelerated, they and others in the international scientific community looked to find the reason.
As the market's decline accelerated, investors tried to withdraw $7 billion from the firm.
A recent visit found that the decline has accelerated.
