Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION (Tables)

v2.3.0.15
STOCK-BASED COMPENSATION (Tables)
9 Months Ended
Sep. 30, 2011
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The fair value of our employee stock options granted, as determined by the Black-Scholes valuation model, was $15.92 and $14.83 for 2011 and 2010, respectively, using the following assumptions:

 

     2011     2010  

Expected life (in years)

     7.5        7.5   

Risk-free interest rate

     2.90     3.30

Expected volatility

     24.26     23.59

Expected dividend yield

     2.77     2.70 %