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Common Stock
12 Months Ended
Dec. 31, 2019
Equity [Abstract]  
Common Stock Common Stock
There were approximately 3,633 and 3,578 common shares outstanding at December 31, 2019 and 2018, respectively. We made the following share repurchases during the years indicated:
 
 
Year Ended December 31,
 
 
2019
 
2018
 
2017
Aggregate purchase price
 
$
698,417

 
$
846,134

 
$
422,166

Number of shares repurchased
 
221

 
301

 
167



We issue shares from the treasury account for all equity plan activity. We issued 276, 188 and 165 such shares during 2019, 2018 and 2017, respectively.