(In millions, except per share data)

2011

2010

2009

Net income

$

135.5

$

77.4

$

56.3

Basic net income per common share:

Weighted average common shares outstanding

98.8

97.6

96.9

Basic net income per common share

$

1.37

$

0.79

$

0.58

Diluted net income per common share:

Weighted average common shares outstanding — Basic

98.8

97.6

96.9

Plus incremental shares from assumed conversions:

Restricted stock units

0.9

1.0

0.6

Stock options

1.0

1.3

0.7

Weighted average common shares outstanding — Diluted

100.7

99.9

98.2

Diluted net income per common share

$

1.35

$

0.77

$

0.57

Anti-dilutive shares outstanding, excluded from computation

0.3

0.8

2.1