Tier 1 Capital Over Time
Tier 1 Capital Northern Trust Bank Of California National Association All Insured Commercial Banks in California
09-30-2006 139,284,000 55,863,923
06-30-2006 133,993,000 55,186,870
03-31-2006 139,211,000 52,941,480
12-31-2005 134,409,000 51,671,906
09-30-2005 129,599,000 50,520,700
06-30-2005 124,234,000 48,013,038
03-31-2005 119,056,000 48,851,248
12-31-2004 114,073,000 47,205,430
09-30-2004 109,717,000 42,641,523
06-30-2004 109,935,000 41,742,566
03-31-2004 106,451,000 40,025,155
12-31-2003 102,363,000 39,277,853
09-30-2003 99,169,000 38,886,093
06-30-2003 95,385,000 37,885,984
03-31-2003 95,010,000 38,173,260
12-31-2002 92,022,000 36,586,216