Exhibit 99.13 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-D KEY PERFORMANCE FACTORS March 31, 2000 Expected B Maturity 05/15/01 Blended Coupon 6.1868% Excess Protection Level 3 Month Average 5.84% March, 2000 5.89% February, 2000 6.18% January, 2000 5.44% Cash Yield 19.39% Investor Charge Offs 4.70% Base Rate 8.81% Over 30 Day Delinquency 4.65% Seller's Interest 8.73% Total Payment Rate 15.20% Total Principal Balance $49,480,326,758.32 Investor Participation Amount $1,000,000,000.00 Seller Participation Amount $4,321,526,239.83