The May increase brings the rate of inflation for the last 12 months to 16.9 percent.
It brought the rate to its lowest level since August 1988.
It reduces 12 tax brackets to 2, bringing the highest rate down to 7 percent by 1991.
If an automatic shift were available in this category, it would cost $9 a day more, bringing the weekly rate to $270, without tax.
This will bring the overall rate to 10%.
Stents bring the rate of renarrowing down to about 15% to 25%.
Last month the Bank of Japan announced it would bring the rate down to 0.15 percent.
This brings the rate to its highest level since March 1986.
It was the fifth consecutive decline and brought the rate to its lowest point since April.
The increase was the second in a week, and it brought the key rate to the highest level since the summer of 1985.