The average gain has been 20 percent within a year.

The average gain on the first day of trading is 62 percent.

An increase of about 300,000, the monthly average gain last year, had been expected.

That fell well short of the 118,000 average gain over the previous three months.

That's up 17 percent from the city's average annual gain of 20,874 during the 1990's.

That changed last week, as the average gain was 1.3 percent through Thursday.

The result was an identical average gain of 80 points for both groups.

In the second quarter, the average gain was 9.3 percent.

In 1997, the average gain hit a high of nearly 21 percent, according to the business officers' association.

Over all, the patients had an average gain of almost two lines.