Net income

$

1,671

$

1,528

$

4,985

$

4,727

Weighted-average number of shares outstanding:

Basic

607.6

608.7

608.7

609.3

Dilutive effect of stock options

0.4

0.4

0.4

0.4

Dilutive effect of retention shares and units

0.6

0.7

0.6

0.6

Diluted

608.6

609.8

609.7

610.3

Earnings per share - basic

$

2.75

$

2.51

$

8.19

$

7.76

Earnings per share - diluted

$

2.75

$

2.51

$

8.18

$

7.75

Stock options excluded as their inclusion would be anti-dilutive

0.6

1.0

0.6

0.9