Estimates in published tables are based on data from the Service Annual Survey
and administrative records. To maintain confidentiality,
no estimates are published that would disclose the
operations of an individual firm. The total
error of a published estimate may be considered to be comprised of sampling
error and nonsampling error. Individuals who
use Service Annual Survey estimates to create new estimates should cite the
Census Bureau as the source of only the original estimates. See technical documentation
for additional information on the Service Annual Survey.
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