Exhibit 99.33 MBNA MASTER CREDIT CARD TRUST II SERIES 1998-C KEY PERFORMANCE FACTORS May 31, 1999 Expected B Maturity 6/16/2003 Blended Coupon 5.0978% Excess Protection Level 3 Month Average 6.52% May, 1999 7.63% April, 1999 5.17% March, 1999 6.77% Cash Yield19.45% Investor Charge Offs 4.88% Base Rate 6.94% Over 30 Day Delinquency 4.89% Seller's Interest 6.97% Total Payment Rate14.69% Total Principal Balance$41,914,776,221.36 Investor Participation Amount$750,000,000.00 Seller Participation Amount$2,922,256,702.87