Exhibit 99.16 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-B KEY PERFORMANCE FACTORS February 28, 2001 Expected B Maturity 3/15/12 Blended Coupon 5.8023% Excess Protection Level 3 Month Average 4.86% February, 2001 7.44% January, 2001 6.90% December, 2000 0.24% Cash Yield 19.48% Investor Charge Offs 4.62% Base Rate 7.42% Over 30 Day Delinquency 5.13% Seller's Interest 8.26% Total Payment Rate 13.44% Total Principal Balance $57,174,868,500.05 Investor Participation Amount $1,000,000,000.00 Seller Participation Amount $4,724,177,938.56