Exhibit 99.37 MBNA MASTER CREDIT CARD TRUST II SERIES 1998-G KEY PERFORMANCE FACTORS June 30, 1999 Expected B Maturity 9/15/06 Blended Coupon 5.1915% Excess Protection Level 3 Month Average 5.98% June, 1999 5.18% May, 1999 7.60% April, 1999 5.15% Cash Yield17.44% Investor Charge Offs 5.06% Base Rate 7.19% Over 30 Day Delinquency 4.82% Seller's Interest11.01% Total Payment Rate13.71% Total Principal Balance$44,380,968,357.42 Investor Participation Amount$750,000,000.00 Seller Participation Amount$4,888,448,838.93