Exhibit 99.16 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-C KEY PERFORMANCE FACTORS April 30, 2001 Expected B Maturity 3/15/04 Blended Coupon 5.1835% Excess Protection Level 3 Month Average 7.76% April, 2001 7.60% March, 2001 8.18% February, 2001 7.51% Cash Yield 19.61% Investor Charge Offs 4.98% Base Rate 7.04% Over 30 Day Delinquency 4.89% Seller's Interest 9.33% Total Payment Rate 13.70% Total Principal Balance $58,171,313,434.78 Investor Participation Amount $750,000,000.00 Seller Participation Amount $5,425,622,873.29