The people meter came closer to the telephone survey than the older system did.
The report is based on a nationwide telephone survey of 1,000 adults.
At the same time, a telephone survey of 1,000 people was conducted.
The study is based on two telephone surveys conducted earlier this year.
A telephone survey can weed out companies that have bad records.
In July, the index, which is based on a telephone survey of about 300 people, was 108.3.
As of July 31, 2007 the telephone survey had been concluded.
The telephone survey of 800 residents was taken between Sept. 11 and 19.
The plan's own telephone surveys, he said, showed an 88 percent satisfaction rate.
The figures are based on a telephone survey of 1,300 adults.