Exhibit 99.20 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-E KEY PERFORMANCE FACTORS August 31, 2000 Expected B Maturity 4/15/02 Blended Coupon 6.8494% Excess Protection Level 3 Month Average 5.65% August, 2000 5.56% July, 2000 5.99% June, 2000 5.42% Cash Yield 19.15% Investor Charge Offs 4.51% Base Rate 9.08% Over 30 Day Delinquency 4.84% Seller's Interest 10.94% Total Payment Rate 14.32% Total Principal Balance $55,220,806,818.68 Investor Participation Amount $750,000,000.00 Seller Participation Amount $6,039,606,300.19