Exhibit 99.43 MBNA MASTER CREDIT CARD TRUST II SERIES 2000-D KEY PERFORMANCE FACTORS May 31, 2001 Expected B Maturity 4/16/07 Blended Coupon 4.6456% Excess Protection Level 3 Month Average 7.54% May, 2001 7.43% April, 2001 7.32% March, 2001 7.89% Cash Yield19.67% Investor Charge Offs 5.45% Base Rate 6.78% Over 30 Day Delinquency 4.84% Seller's Interest 8.52% Total Payment Rate14.20% Total Principal Balance$58,203,705,030.43 Investor Participation Amount$850,000,000.00 Seller Participation Amount$4,958,014,468.94