This article in the Journal points to poiints inflation across the board, sadly a trend that has been evident since the programs began.
Alas, poor loyalty we knew you well.
Loyalty is dead, the experts proclaim, and the statistics seem to bear them out. On average, U.S. corporations now lose half their customers in five years, half their employees in four, and half their investors in less than one. We seem to face a future in which the only business relationships will be opportunistic transactions between virtual strangers. Read more at http://www.notable-quotes.com/l/loyalty_quotes.html#T6fPKW8U2BCxAJ01.99