Note 20 — Earnings Per Share

The following table sets forth the computation of basic and diluted earnings per share:


	Year Ended September 30,
	2018			2017			2016
Numerator:
Net income	$	354,396		$	436,826		$	409,331
Net income and dividends attributable to participating restricted shares		(2,650	)		(3,517	)		(3,592	)

Numerator for basic earnings per common share	$	351,746		$	433,309		$	405,739

Undistributed income allocated to participating restricted shares		1,617			2,512			2,604
Undistributed income reallocated to participating restricted shares		(1,603	)		(2,488	)		(2,569	)

Numerator for diluted earnings per common share	$	351,760		$	433,333		$	405,774

Denominator:
Weighted average number of shares outstanding — basic		142,422			146,017			149,168
Weighted average number of participating restricted shares		(1,065	)		(1,176	)		(1,309	)

Weighted average number of common shares — basic		141,357			144,841			147,859

Effect of assumed conversion of 0.5% convertible notes		—			—			5
Effect of dilutive stock options granted		1,282			1,414			2,002

Weighted average number of common shares — diluted		142,639			146,255			149,866

Basic earnings per common share	$	2.49		$	2.99		$	2.74

Diluted earnings per common share	$	2.47		$	2.96		$	2.71

For the fiscal years ended September 30, 2018, 2017 and 2016, 1,357, 1,281 and 1,785 shares, respectively, on a weighted average basis, were attributable to antidilutive outstanding stock options and therefore were not included in the calculation of diluted earnings per share.