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Selected Annual and Quarterly Information This section shows selected financial and operational data. 

EBITDA to interest ratio is EBITDA divided by interest expense. 

Operating margin is operating income divided by operating revenues. 

Net debt to EBITDA is net debt divided by EBITDA. 

Total debt to total assets is total long-term debt (including debt due within one year) divided by total assets. 

Long-term debt to equity is long-term debt (including portion due within one year) divided by share- holders’ equity. 

Cash flow per share is calculated by dividing cash from operating activi- ties less capital expenditures by the average number of common shares outstanding. 

Cash flow yield is cash from operating activi- ties less capital expenditures, other investing activities, dividends on preferred shares and dividends paid by sub- sidiaries to non-controlling interest, divided by the number of common shares outstanding at the end of the year and multiplied by the share price at the end of the year. 

## Selected Annual and Quarterly Information 

## Annual Financial Information 

The tables below show selected consolidated financial data for each year from 2000 to 2004. We discuss the factors that have caused our results to vary over the past two years throughout this MD&A. 

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