3-month percent changes in Employment Cost Index, benefits costs for State and local government, seasonally adjusted, Sep. 1999-June 2001 Percent change Wages and salaries Benefits Sep. 1999 0.9 0.6 Dec. 1999 1.0 1.2 Mar. 2000 0.9 0.8 June 2000 0.8 0.5 Sep. 2000 0.8 0.3 Dec. 2000 0.8 0.7 Mar. 2001 1.0 1.2 June 2001 1.1 1.1