Exhibit 99.38 MBNA MASTER CREDIT CARD TRUST II SERIES 1999-D KEY PERFORMANCE FACTORS June 30, 2000 Expected B Maturity 6/15/2006 Blended Coupon 6.8238% Excess Protection Level 3 Month Average 5.36% June, 2000 4.98% May, 2000 5.73% April, 2000 5.36% Cash Yield18.75% Investor Charge Offs 4.56% Base Rate 9.21% Over 30 Day Delinquency 4.60% Seller's Interest12.05% Total Payment Rate14.03% Total Principal Balance$54,839,173,315.51 Investor Participation Amount$500,000,000.00 Seller Participation Amount$6,607,972,797.02