National Service Industries
1981 rank: 353
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FORTUNE 500 appearances:
Revenues 795.7 N.A. 353 355
Profits 45.2 N.A. 301 334
Assets 368.0 ó 436 429
Stockholders' Equity 243.9 ó 363 369
Employees* 18,400 ó 230 ó
1980 ($) 3.54
1979 ($) 3.12
10 years prior 1.35
10-year growth rate (%) 10.1
1980 15.1 N.A.
10-year annual rate 5.0 N.A.
Since 1955, when the first FORTUNE 500 was created, more than 1,800 companies have appeared on the list. Many of these companies have changed names over this period, owing to mergers, acquisitions, and bankruptcies. Other companies have gone private, or simply changed their names.

Companies are listed by the name with which they were associated in 2005, or at the time of their most recent list appearance before that. FORTUNE 500 companies that have been acquired by other FORTUNE 500 companies are listed under the name of the acquiring company. Rankings have been revised to reflect corrections in data.

*Employee data is total number, not in $ millions.
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