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NET EARNINGS PER SHARE (Tables)
3 Months Ended
Mar. 31, 2013
Potential Shares Not Included in the Computation of Diluted Earnings per Share
Potential Shares Not Included in the Computation of Diluted Earnings per Share
 
QUARTER ENDED
SHARES IN THOUSANDS
MARCH 2013
 
MARCH 2012
Stock options
5,200

 
20,521

Performance share units
519

 
548