| 1 | 561210 | FACILITIES SUPPORT SERVICES | $3,520,469,106 | 15 |
| 2 | 511210 | SOFTWARE PUBLISHERS | $108,404,900 | 2 |
| 3 | 541715 | RESEARCH AND DEVELOPMENT IN THE PHYSICAL, ENGINEERING, AND LIFE SCIENCES (EXCEPT NANOTECHNOLOGY AND BIOTECHNOLOGY) | $24,514,810 | 3 |
| 4 | 541330 | ENGINEERING SERVICES | $17,094,541 | 10 |
| 5 | 336413 | OTHER AIRCRAFT PARTS AND AUXILIARY EQUIPMENT MANUFACTURING | $14,456,757 | 2 |
| 6 | 561720 | JANITORIAL SERVICES | $3,150,034 | 1 |
| 7 | 561612 | SECURITY GUARDS AND PATROL SERVICES | $2,904,430 | 1 |
| 8 | 541611 | ADMINISTRATIVE MANAGEMENT AND GENERAL MANAGEMENT CONSULTING SERVICES | $2,244,206 | 1 |
| 9 | 324110 | PETROLEUM REFINERIES | $2,041,361 | 387 |
| 10 | 339112 | SURGICAL AND MEDICAL INSTRUMENT MANUFACTURING | $1,945,946 | 2 |
| 11 | 541519 | OTHER COMPUTER RELATED SERVICES | $1,840,756 | 6 |
| 12 | 484110 | GENERAL FREIGHT TRUCKING, LOCAL | $1,760,000 | 1 |
| 13 | 541690 | OTHER SCIENTIFIC AND TECHNICAL CONSULTING SERVICES | $1,462,921 | 2 |
| 14 | 811210 | ELECTRONIC AND PRECISION EQUIPMENT REPAIR AND MAINTENANCE | $873,258 | 1 |
| 15 | 513210 | SOFTWARE PUBLISHERS | $711,915 | 1 |
| 16 | 115210 | SUPPORT ACTIVITIES FOR ANIMAL PRODUCTION | $702,835 | 1 |
| 17 | 238210 | ELECTRICAL CONTRACTORS AND OTHER WIRING INSTALLATION CONTRACTORS | $702,052 | 1 |
| 18 | 611310 | COLLEGES, UNIVERSITIES, AND PROFESSIONAL SCHOOLS | $676,231 | 1 |
| 19 | 541380 | TESTING LABORATORIES AND SERVICES | $594,743 | 2 |
| 20 | 325413 | IN-VITRO DIAGNOSTIC SUBSTANCE MANUFACTURING | $494,710 | 2 |
| 21 | 484210 | USED HOUSEHOLD AND OFFICE GOODS MOVING | $484,560 | 1 |
| 22 | 221310 | WATER SUPPLY AND IRRIGATION SYSTEMS | $247,623 | 1 |
| 23 | 332439 | OTHER METAL CONTAINER MANUFACTURING | $223,830 | 1 |
| 24 | 238990 | ALL OTHER SPECIALTY TRADE CONTRACTORS | $191,388 | 1 |
| 25 | 333618 | OTHER ENGINE EQUIPMENT MANUFACTURING | $166,694 | 1 |
| 26 | 333120 | CONSTRUCTION MACHINERY MANUFACTURING | $119,744 | 1 |
| 27 | 541310 | ARCHITECTURAL SERVICES | $97,355 | 1 |
| 28 | 621111 | OFFICES OF PHYSICIANS (EXCEPT MENTAL HEALTH SPECIALISTS) | $84,300 | 1 |
| 29 | 492110 | COURIERS AND EXPRESS DELIVERY SERVICES | $84,200 | 1 |
| 30 | 541511 | CUSTOM COMPUTER PROGRAMMING SERVICES | $74,384 | 2 |
| 31 | 541990 | ALL OTHER PROFESSIONAL, SCIENTIFIC, AND TECHNICAL SERVICES | $70,000 | 2 |
| 32 | 236220 | COMMERCIAL AND INSTITUTIONAL BUILDING CONSTRUCTION | $59,672 | 1 |
| 33 | 561710 | EXTERMINATING AND PEST CONTROL SERVICES | $59,460 | 1 |
| 34 | 621511 | MEDICAL LABORATORIES | $52,500 | 1 |
| 35 | 541191 | TITLE ABSTRACT AND SETTLEMENT OFFICES | $49,938 | 1 |
| 36 | 561599 | ALL OTHER TRAVEL ARRANGEMENT AND RESERVATION SERVICES | $46,759 | 1 |
| 37 | 517312 | WIRELESS TELECOMMUNICATIONS CARRIERS (EXCEPT SATELLITE) | $46,031 | 1 |
| 38 | 337214 | OFFICE FURNITURE (EXCEPT WOOD) MANUFACTURING | $35,967 | 3 |
| 39 | 541930 | TRANSLATION AND INTERPRETATION SERVICES | $32,301 | 1 |
| 40 | 333517 | MACHINE TOOL MANUFACTURING | $29,020 | 1 |
| 41 | 811310 | COMMERCIAL AND INDUSTRIAL MACHINERY AND EQUIPMENT (EXCEPT AUTOMOTIVE AND ELECTRONIC) REPAIR AND MAINTENANCE | $13,860 | 1 |
| 42 | 541199 | ALL OTHER LEGAL SERVICES | $6,697 | 1 |
| 43 | 334516 | ANALYTICAL LABORATORY INSTRUMENT MANUFACTURING | $4,874 | 1 |
| 44 | 333997 | SCALE AND BALANCE MANUFACTURING (2007), SCALE AND BALANCE (EXCEPT LABORATORY) MANUFACTURING (2002) | $3,480 | 1 |
| 45 | 339113 | SURGICAL APPLIANCE AND SUPPLIES MANUFACTURING | $3,010 | 1 |
| 46 | 311991 | PERISHABLE PREPARED FOOD MANUFACTURING | $2,893 | 4 |
| 47 | 311511 | FLUID MILK MANUFACTURING | $893 | 1 |
| 48 | 311812 | COMMERCIAL BAKERIES | $504 | 1 |