Exhibit 99.22 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-M KEY PERFORMANCE FACTORS DECEMBER, 1998 Expected B Maturity 12/15/06 Blended Coupon 5.6048% Excess Protection Level 3 Month Average 5.78% December, 1998 5.97% November, 1998 5.58% October, 1998 5.78% Cash Yield 18.74% Investor Charge Offs 4.98% Base Rate 7.79% Over 35 Day Delinquency 4.96% Seller's Interest 10.83% Total Payment Rate 13.62% Total Principal Balance $ 41,270,703,888.09 Investor Participation Amount $ 500,000,000.00 Seller Participation Amount $ 4,468,784,369.60