Exhibit 99.22 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-M KEY PERFORMANCE FACTORS MARCH, 1999 Expected B Maturity 12/15/06 Blended Coupon 5.1874% Excess Protection Level 3 Month Average 6.04% March, 1999 6.68% February, 1999 6.02% January, 1999 5.41% Cash Yield 19.20% Investor Charge Offs 5.12% Base Rate 7.39% Over 35 Day Delinquency 4.94% Seller's Interest 6.34% Total Payment Rate 14.77% Total Principal Balance $ 40,628,355,078.94 Investor Participation Amount $ 500,000,000.00 Seller Participation Amount $ 2,576,435,560.45