Tier 1 Capital Over Time
Tier 1 Capital Northern Trust Bank, National Association All Insured Commercial Banks in Arizona
09-30-2006 112,959,000 26,027,909
06-30-2006 110,326,000 24,629,023
03-31-2006 109,727,000 24,258,366
12-31-2005 109,708,000 24,228,122
09-30-2005 113,441,000 24,899,488
06-30-2005 113,190,000 24,045,325
03-31-2005 113,139,000 24,459,650
12-31-2004 108,361,000 24,150,421
09-30-2004 107,990,000 23,154,410
06-30-2004 103,598,000 21,793,026
03-31-2004 101,442,000 21,223,872
12-31-2003 97,345,000 20,094,128
09-30-2003 95,130,000 18,619,051
06-30-2003 91,074,000 17,772,316
03-31-2003 89,310,000 17,007,368
12-31-2002 85,930,000 19,292,622