Data from the 2002 Economic Census are published primarily according to the 2002 North Ameri-

can Industry Classification System (NAICS).NAICS was first adopted in the United States,Canada,

and Mexico in 1997.The 2002 Economic Census covers the following NAICS sectors:

21 Mining

22 Utilities

23 Construction

31-33 Manufacturing

42 Wholesale Trade

44-45 Retail Trade

48-49 Transportation and Warehousing

51 Information

52 Finance and Insurance

53 Real Estate and Rental and Leasing

54 Professional,Scientific,and Technical Services

55 Management of Companies and Enterprises

56 Administrative and Support and Waste Management and Remediation Services

61 Educational Services

62 Health Care and Social Assistance

71 Arts,Entertainment,and Recreation

72 Accommodation and Food Services

81 Other Services (except Public Administration)