Numerator-

Numerator for basic and diluted earnings per share −

Net income available to common shareholders

$

304,153

$

347,055

$

391,382

Denominator-

Denominator for basic earnings per share – weighted average shares outstanding

79,058

81,089

83,100

Effect of dilutive securities−

Denominator for diluted earnings per share − adjusted weighted average shares outstanding and assumed conversions

81,818

83,720

85,727

Basic earnings per common share

$

3.85

$

4.28

$

4.71

Diluted earnings per common share and common share equivalents

$

3.72

$

4.15

$

4.57