Earnings Per Share

9 Months Ended

Sep. 30, 2013

The following table reconciles the numerators and denominators used in the calculation of basic and diluted earnings per share (EPS):



	Three months ended September 30,				Nine months ended September 30,
	2013		2012		2013		2012
Numerators:
Numerator for both basic and diluted EPS, net income	$	55,520,961	$	41,877,083	$	153,048,925	$	128,988,206
Denominators:
Denominator for basic EPS, weighted-average shares outstanding	143,697,760		143,027,693		143,160,402		143,415,077
Potentially dilutive shares resulting from stock plans	821,140		556,682		655,639		1,002,142
Denominator for diluted EPS	144,518,900		143,584,375		143,816,041		144,417,219

Shares related to stock plans not included in diluted average common shares outstanding because their effect would be anti-dilutive	3,220,980		5,332,661		3,573,418		3,289,832

The entire disclosure for earnings per share.