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Income Taxes
6 Months Ended
Jun. 30, 2013
Income Taxes

10. INCOME TAXES

The effective income tax rate was 35.7% for the three months ended June 30, 2013, comparable to 36.8% for the three months ended June 30, 2012. For the six months ended June 30, 2013 the effective tax rate was 35.5%, compared to 36.7% for the six months ended June 30, 2012. The tax rate for the three and six months ended June 30, 2013 reflects a change in our estimated tax liability associated with limitations on the deductibility of annual compensation in excess of $500,000 per employee as mandated by the Patient Protection and Affordable Care Act and The Health Care and Education Reconciliation Act of 2010 (which we collectively refer to as the Health Care Reform Law).