ABBREVIATIONS AND SYMBOLS

The following abbreviations and symbols are used in this publication:

-      Represents zero.
(D)    Withheld to avoid disclosing data for individual companies; data are
       included in higher level totals.
(NA)   Not available.
(NC)   Not comparable.
(S)    Withheld because estimate did not meet publication standards.
(X)    Not applicable.
(Z)    Less than half the unit shown.
CMSA   Consolidated metropolitan statistical area.
IC     Independent city.
MA     Metropolitan area.
MSA    Metropolitan statistical area.
n.e.c. Not elsewhere classified.
n.s.k. Not specified by kind.
PMSA   Primary metropolitan statistical area.
pt     Part.
r      Revised.
SIC    Standard Industrial Classification.