Exhibit 99.23 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-F KEY PERFORMANCE FACTORS March 31, 2000 Expected B Maturity 6/17/02 Blended Coupon 6.5715% Excess Protection Level 3 Month Average 5.91% March, 2000 6.01% February, 2000 6.26% January, 2000 5.46% Cash Yield 19.39% Investor Charge Offs 4.70% Base Rate 8.69% Over 30 Day Delinquency 4.65% Seller's Interest 8.73% Total Payment Rate 15.20% Total Principal Balance $49,480,326,758.32 Investor Participation Amount $706,000,000.00 Seller Participation Amount $4,321,526,239.83