Exhibit 99.16 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-E KEY PERFORMANCE FACTORS May 31, 2001 Expected B Maturity 4/15/02 Blended Coupon 4.8367% Excess Protection Level 3 Month Average 7.61% May, 2001 7.23% April, 2001 7.87% March, 2001 7.75% Cash Yield 19.68% Investor Charge Offs 5.45% Base Rate 7.00% Over 30 Day Delinquency 4.84% Seller's Interest 8.52% Total Payment Rate 14.20% Total Principal Balance $58,203,705,030.43 Investor Participation Amount $750,000,000.00 Seller Participation Amount $4,958,014,468.94