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(1) Based on income before cumulative effect of change in accounting principle. See Note 3, page 51 of this report. 

(2) Based on income before cumulative effect of change in accounting principle and shareholders' equity at beginning of year. 

(3) Ratio of income before income taxes, minority interest, cumulative effect of change in accounting principle and interest expense to interest expense. 

(4) Based on income before income taxes, minority interest and cumulative effect of change in accounting principle. 

(5) See Note 1, page 48 of this report, for a description of technical expenditures. 

