Nine Months

Ended

Year Ended

September 30,

December 31,

2011

2010

2009

2008

2007

2006

Earnings:

Income from continuing operations before provision for income taxes

$

219,275

$

246,484

$

162,156

$

156,420

$

199,160

$

89,200

Fixed charges

14,131

20,298

20,008

18,824

18,158

18,379

Total earnings

$

233,406

$

266,782

$

182,164

$

175,244

$

217,318

$

107,579

Fixed Charges:

Interest expense

$

8,573

$

12,723

$

12,695

$

12,087

$

11,924

$

12,227

Portion of rentals representative of interest factor

5,558

7,575

7,313

6,737

6,234

6,152

Total fixed charges

$

14,131

$

20,298

$

20,008

$

18,824

$

18,158

$

18,379

Ratio of earnings to fixed charges

16.52

13.14

9.10

9.31

11.97

5.85