Exhibit 99.41 MBNA MASTER CREDIT CARD TRUST II SERIES 1999-I KEY PERFORMANCE FACTORS July 31, 2000 Expected B Maturity 08/15/2002 Blended Coupon 6.4825% Excess Protection Level 3 Month Average 5.57% July, 2000 6.03% June, 2000 4.97% May, 2000 5.72% Cash Yield19.22% Investor Charge Offs 4.57% Base Rate 8.62% Over 30 Day Delinquency 4.81% Seller's Interest11.87% Total Payment Rate14.13% Total Principal Balance$55,010,319,976.67 Investor Participation Amount$750,000,000.00 Seller Participation Amount$6,529,119,458.18