EC0231SR12
Manufacturing: Subject Series - Concentration Ratios: Share of Value of Shipments Accounted for by the 4, 8, 20, and 50 Largest Companies for Industries: 2002

[NOTE. Data based on the 2002 Economic Census. For information on
confidentiality protection, sampling error, nonsampling error, and
definitions, see 
Survey
Methodology. Data in this table represent those available when
this report was created; data may not be available for all NAICS
industries or geographies. Data in this table may be subject to
employment- and/or sales-size minimums that vary by industry.]



X	Not applicable

D	Withheld to avoid disclosing data for individual companies; data are included in higher level totals

UNIVERSE DESCRIPTION
The universe of this file is all establishments with one or more
paid employees on the payroll at any time during the year. This
universe includes all establishments classified in Manufacturing
sector (sector 31-33) in 2002.
DATA ITEMS
This file contains data on:

  Establishments
  Total value of shipments
  Share of value of shipments accounted for by the 4, 8, 20,
  and 50 largest companies
  Herfindahl-Hirschman index for 50 largest companies

GEOGRAPHIC COVERAGE
The data are shown at the U.S. level.
INDUSTRY DETAIL
The data are shown at the 3- through 6-digit NAICS code
levels.
OTHER VARIABLES IDENTIFYING RECORDS
The data are also identified by company size.
RELEASE SCHEDULE
The data in this file correspond to the Concentration Ratios in
Manufacturing Summary Series report that was released in June
2006.
RELATED DATA FILES
None.
CORRESPONDENCE TO PDF REPORTS
These data are exactly the same as are shown in the PDF-format
Concentration Ratios in Manufacturing Summary Series report. This
report is also available on the Census Bureau's Internet site at
www.census.gov/mcd/asmhome.html.
DATA LIMITATIONS
There are no special limitations to these data.
FILE SEQUENCE
Data are presented in ascending NAICS code sequence.




