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Earnings Per Share
 12 Months Ended
Dec. 31, 2014
Earnings Per Share [Abstract]  
Earnings per share
NOTE 14 – EARNINGS PER SHARE

The following table reconciles the numerator and denominator used in the basic and diluted earnings per share calculations for the years ended December 31, 2014, 2013 and 2012 (in thousands, except per share data):
 
For the Year Ended 
 December 31,
 
2014
 
2013
 
2012
Numerator (basic and diluted):
 
 
 
 
 
Net income
$
778,182

 
$
670,292

 
$
585,746

 
 
 
 
 
 
Denominator:
 
 
 
 
 
Denominator for basic earnings per share - weighted-average shares
104,262

 
109,244

 
121,182

Effect of stock options (1)
1,779

 
1,857

 
2,132

Denominator for diluted earnings per share - weighted-average shares
106,041

 
111,101

 
123,314

 
 
 
 
 
 
Earnings per share:
 
 
 
 
 
Earnings per share-basic
$
7.46

 
$
6.14

 
$
4.83

Earnings per share-assuming dilution
$
7.34

 
$
6.03

 
$
4.75

 
 
 
 
 
 
Antidilutive potential common shares not included in the calculation of diluted earnings per share:
 
 
 
 
 
Stock options (1)
363

 
498

 
1,816

Weighted-average exercise price per share of antidilutive stock options (1)
$
151.65

 
$
103.80

 
$
87.88


(1) 
See Note 9 for further discussion on the terms of the Company's share-based compensation plans.

Subsequent to the end of the year and through February 27, 2015, the Company repurchased 0.1 million shares of its common stock, at an average price of $197.48, for a total investment of $27.8 million.