Exhibit 99.22 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-M KEY PERFORMANCE FACTORS MAY, 1999 Expected B Maturity 12/15/06 Blended Coupon 5.1844% Excess Protection Level 3 Month Average 6.45% May, 1999 7.53% April, 1999 5.13% March, 1999 6.68% Cash Yield 19.45% Investor Charge Offs 4.88% Base Rate 7.04% Over 30 Day Delinquency 4.89% Seller's Interest 6.97% Total Payment Rate 14.69% Total Principal Balance $ 41,914,776,221.36 Investor Participation Amount $ 500,000,000.00 Seller Participation Amount $ 2,922,256,702.87