Year ended
December 31,
 
(millions of dollars except per share amounts) 2012   2011   2012   2011  
Revenue 934.0   1,043.4   3,624.3   3,925.6  
Gross profit 228.2   234.6   846.3   827.5  
EBITDA from operations (1) 83.0   87.9   282.5   273.0  
Interest (16.6 ) (19.4 ) (71.7 ) (79.2 )
Cash income tax expense (0.3 ) (1.4 ) (1.1 ) (1.5 )
Corporate costs (3.5 ) (3.3 ) (16.2 ) (11.9 )
Adjusted operating cash flow (1) 62.6   63.8   193.5   180.4  
                 
Adjusted operating cash flow per share, basic and diluted (1)(2)(3) $0.56   $0.58   $1.73   $1.65  
Dividends paid per share $0.15   $0.20   $0.60   $1.17

Dividends paid per share in 2011 were 1.17, so 1.65 -1.17 equals $0.48

This year was .60 or 1.73-0.60 for $1.13, a  135% increase in retained operating cash flow that can be used to pay down debt and fund growth. (which they are doing both of)