12-month percent changes in Employment Cost Index, private industry, December 2001-December 2006 Percent changes Compensation Wages and Benefit costs salaries costs Dec-01 4.1 3.8 5.2 Dec-02 3.1 2.6 4.2 Dec-03 4.0 3.1 6.5 Dec-04 3.8 2.6 6.7 Dec-05 2.9 2.5 4.0 Dec-06 3.2 3.2 3.1