Exhibit 99.17 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-J KEY PERFORMANCE FACTORS December 31, 1999 Expected B Maturity 10/15/03 Blended Coupon 6.6583% Excess Protection Level 3 Month Average 5.53% December, 1999 4.61% November, 1999 5.81% October, 1999 6.17% Cash Yield 19.14% Investor Charge Offs 5.04% Base Rate 9.49% Over 30 Day Delinquency 4.63% Seller's Interest 11.35% Total Payment Rate 14.35% Total Principal Balance $49,947,826,881.37 Investor Participation Amount $1,000,000,000.00 Seller Participation Amount $5,671,007,362.8