Efficiency Ratio Over Time
Efficiency Ratio Bank One, National Association All Insured Commercial Banks in Illinois
09-30-2004 53.278 62.952
06-30-2004 57.863 63.147
03-31-2004 59.485 63.481
12-31-2003 59.332 63.697
09-30-2003 59.18 62.506
06-30-2003 58.986 62.464
03-31-2003 55.824 62.651
12-31-2002 52.596 62.349