Exhibit 99.37 MBNA MASTER CREDIT CARD TRUST II SERIES 1998-G KEY PERFORMANCE FACTORS April 30, 1999 Expected B Maturity 9/15/2006 Blended Coupon 5.1322% Excess Protection Level 3 Month Average 5.97% April, 1999 5.15% March, 1999 6.71% February, 1999 6.06% Cash Yield17.83% Investor Charge Offs 5.23% Base Rate 7.45% Over 35 Day Delinquency 4.87% Seller's Interest10.40% Total Payment Rate14.17% Total Principal Balance$42,469,994,217.25 Investor Participation Amount$750,000,000.00 Seller Participation Amount$4,418,074,698.76