Year Ended May 31,

(in millions, except per share data)

2015

2014

2013

Net income

$

9,938

$

10,955

$

10,925

Weighted average common shares outstanding

4,404

4,528

4,769

Dilutive effect of employee stock plans

99

76

75

Dilutive weighted average common shares outstanding

4,503

4,604

4,844

Basic earnings per share

$

2.26

$

2.42

$

2.29

Diluted earnings per share

$

2.21

$

2.38

$

2.26

Shares subject to anti-dilutive stock options and restricted stock-based awards

excluded from calculation(1)

37

76

208