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Income Taxes
9 Months Ended
Sep. 30, 2019
Income Taxes  
Income Taxes

Note 8.  Income Taxes

Our effective income tax rate for the three months and nine months ended September 30, 2019 was 25.0% compared to 22.9% and 23.7% for the three months and nine months ended September 30, 2018, respectively. The differences between our effective income tax rates and the U.S. federal statutory rate of 21% were mainly due to state income taxes partially offset by the effects of company-owned life insurance policies.