Exhibit 99.19 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-M KEY PERFORMANCE FACTORS DECEMBER, 1999 Expected B Maturity 12/15/06 Blended Coupon 6.2855% Excess Protection Level 3 Month Average 5.48% December, 1999 5.06% November, 1999 5.20% October, 1999 6.17% Cash Yield 19.17% Investor Charge Offs 5.04% Base Rate 9.07% Over 30 Day Delinquency 4.63% Seller's Interest 11.35% Total Payment Rate 14.35% Total Principal Balance $ 49,947,826,881.37 Investor Participation Amount $ 500,000,000.00 Seller Participation Amount $ 5,671,007,362.88