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CAPITAL STOCK | 12 Months Ended
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Dec. 31, 2014
CAPITAL STOCK |
CAPITAL STOCK | NOTE 14 CAPITAL STOCK We have 199 million authorized shares of common stock. The number of shares of common stock and treasury stock and the share activity were as follows:
|  | Common Shares |  | Treasury Shares |
|  | 2014 |  | 2013 |  | 2014 |  | 2013 |
Balance at the beginning of the year |  |  | 85,364,303 |  |  | 84,086,341 |  |  | 19,979,833 |  |  | 18,158,002 |
Employee option exercises |  |  | 851,396 |  |  | 1,217,583 |  |  | (177,280 | ) |  | (179,169 | )
Director option exercises |  |  | 41,844 |  |  | 48,333 |  |  | — |  |  | — |
Restricted stock vestings |  |  | 9,924 |  |  | 12,046 |  |  | — |  |  | — |
Common stock repurchases |  |  | — |  |  | — |  |  | 4,533,814 |  |  | 2,001,000 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balance at the end of the year |  |  | 86,267,467 |  |  | 85,364,303 |  |  | 24,336,367 |  |  | 19,979,833 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
The cash dividends paid on the common stock for the years ended December 31, 2014, 2013, and 2012 aggregated $71.1 million, $66.1 million and $58.4 million, respectively.

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