3-month percent changes in Employment Cost Index, wages and salaries and benefits costs for State and local government workers, seasonally adjusted, March 1999-December 2000 Wages and salaries Benefits Mar. 1999 0.7 0.5 June 1999 0.9 0.6 Sep. 1999 0.9 0.4 Dec. 1999 1.0 1.2 Mar. 2000 0.9 1.0 June 2000 0.8 0.5 Sep. 2000 0.8 0.1 Dec. 2000 0.8 0.8