Earnings Per Share

9 Months Ended

Sep. 30, 2017

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,
	2017		2016		2017		2016
Numerators:
Numerator for both basic and diluted EPS, net income	$	90,230,335	$	92,064,646	$	276,323,023	$	258,829,882
Denominators:
Denominator for basic EPS, weighted-average shares outstanding	284,661,920		287,736,638		285,915,565		288,466,905
Potentially dilutive shares resulting from stock plans	2,359,030		2,717,187		3,145,936		2,557,758
Denominator for diluted EPS	287,020,950		290,453,825		289,061,501		291,024,663

Shares related to stock plans not included in diluted average common shares outstanding because their effect would be anti-dilutive	807,013		1,818,032		2,847,247		4,193,947