Exhibit 99.15 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-D KEY PERFORMANCE FACTORS December 31, 1997 Expected B Maturity 05/15/01 Blended Coupon 6.1635% Excess Protection Level 3 Month Average 5.18% December, 1997 5.24% November, 1997 4.93% October, 1997 5.37% Cash Yield 18.25% Investor Charge Offs 4.64% Base Rate 8.37% Over 35 Day Delinquency 4.81% Seller's Interest 16.15% Total Payment Rate 13.29% Total Principal Balance $34,934,847,924.76 Investor Participation Amount $1,000,000,000.00 Seller Participation Amount $5,643,513,406.27