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Note 10 - Options: Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions (Tables)
12 Months Ended
Dec. 31, 2012
Tables/Schedules  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

 

 

 

Years ended December 31,

 

 

2012

 

 

2011

 

 

2010

Expected dividend amount per quarter

$

0.2571

 

$

0.2449

 

$

0.2471

Expected stock price volatility

 

22.8%

 

 

22.8%

 

 

22.0%

Risk-free interest rate

 

0.54%

 

 

1.19%

 

 

2.08%

Expected life of options

 

3.8 years

 

 

3.6 years

 

 

4.5 years