Exhibit 99.23 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-F KEY PERFORMANCE FACTORS May 31, 2000 Expected B Maturity 6/17/02 Blended Coupon 6.6482% Excess Protection Level 3 Month Average 5.78% May, 2000 5.75% April, 2000 5.56% March, 2000 6.01% Cash Yield 19.29% Investor Charge Offs 4.66% Base Rate 8.88% Over 30 Day Delinquency 4.70% Seller's Interest 9.50% Total Payment Rate 14.38% Total Principal Balance $52,496,626,963.52 Investor Participation Amount $706,000,000.00 Seller Participation Amount $4,987,826,445.03