Exhibit 99.39 MBNA MASTER CREDIT CARD TRUST II SERIES 1999-J KEY PERFORMANCE FACTORS December 31, 2000 Expected B Maturity 09/15/2009 Blended Coupon 7.0937% Excess Protection Level 3 Month Average 4.22% December, 2000 0.21% November, 2000 6.31% October, 2000 6.14% Cash Yield19.79% Investor Charge Offs10.15% Base Rate 9.44% Over 30 Day Delinquency 4.72% Seller's Interest10.47% Total Payment Rate13.35% Total Principal Balance$57,190,978,436.47 Investor Participation Amount$1,000,000,000.00 Seller Participation Amount$5,990,287,874.98