Wages do not include remuneration for overtime, bonuses and gratuities, family allowances, or other social security payments made by the employer. See Yearbook of Labour Statistics 1999 for further discussion of wage data. The Inflator rate was calculated by dividing consumer price index for 1998 by the consumer price index for the year the wage rate was reported. Rates as reported in International Financial Statistics , International Monetary Fund, February 2000. Rates are market average for the entire year.
Regression analysis is ordinary least squares analysis.