The rate of forming was initially high, but reduced progressively with time.

"And in 2006 the rate of deforestation reduced for the first time in six years."

But over time, the lower rate reduces revenue to the Treasury.

Increased rates of recycling, he said, would reduce costs even further.

And the lower rates also reduce the risk that a given borrower will default.

A rising rate of inflation may reduce unemployment, a high one will not.

At the same time, lower rates reduce the purchasing power of the retired and others who have some savings.

Higher official rates should "reduce external cycling of credit funds," the bank said in a statement.

The lower rates have also reduced the interest paid on deposits.

Lower rates usually reduce the value of the dollar, which makes American goods less expensive in foreign currencies.