Net and percent changes are based on rounded data. Data are subject to revision. Net and percent changes based on rounded data. Data are subject to revision. Detail may not add to totals due to rounding.
Data are subject to revision.
Detail may not add to totals due to rounding. This fact sheet conveys important technical information that will contribute to a better understanding of the job and unemployment data included in this and future press releases. This is the same method used by 39 states since 1989. Model-based historical data is available back through January 1978 upon request. Reduction of household survey sample The unemployment rate for the nation continues to be derived directly from the monthly household survey.