<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Since May 1981, 37 million customers have enrolled in United's Mileage Plus and 27 million remain on file. Of these, 10 million members are active - meaning there has been activity in an account in the past 12 months.
United's Premier customers represent 8 percent of the active members, but generate 35 percent of the total transportation revenue. Premier members spend more than 6 times general members, while Premier Executives and 1K members spend more than 12 times and 30 times respectively. If just 1 percent of the Premier-level members resigned from Mileage Plus, the company would lose $58 million in transportation revenue.

In 1998, the different frequent flier groups generated the following percentages of total revenue.

General Members: 24.2 percent
Premier: 15.2 percent
Premier Executive: 13.6 percent
1K: 6.3 percent

While final numbers for 1999 are not in yet, they are estimated to be similar to 1998.</font>