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Income Taxes
6 Months Ended
Jun. 30, 2023
Income Taxes  
Income Taxes

9.    Income Taxes

The effective income tax rates for the three months ended June 30, 2023 and 2022 were 26.2% and 24.1%, respectively. The effective income tax rates for the six months ended June 30, 2023 and 2022 were 25.9% and 25.3%, respectively. The 2023 and 2022 effective tax rates differed from the federal rate of 21% primarily because of state and foreign taxes.