| 1 | 541110 | OFFICES OF LAWYERS | $356,310,289 | 1 |
| 2 | 541715 | RESEARCH AND DEVELOPMENT IN THE PHYSICAL, ENGINEERING, AND LIFE SCIENCES (EXCEPT NANOTECHNOLOGY AND BIOTECHNOLOGY) | $331,883,182 | 4 |
| 3 | 541519 | OTHER COMPUTER RELATED SERVICES | $68,024,872 | 10 |
| 4 | 541611 | ADMINISTRATIVE MANAGEMENT AND GENERAL MANAGEMENT CONSULTING SERVICES | $49,552,826 | 18 |
| 5 | 541511 | CUSTOM COMPUTER PROGRAMMING SERVICES | $46,844,093 | 3 |
| 6 | 541512 | COMPUTER SYSTEMS DESIGN SERVICES | $38,344,182 | 4 |
| 7 | 541690 | OTHER SCIENTIFIC AND TECHNICAL CONSULTING SERVICES | $35,335,050 | 9 |
| 8 | 561320 | TEMPORARY HELP SERVICES | $16,364,302 | 17 |
| 9 | 561422 | TELEMARKETING BUREAUS AND OTHER CONTACT CENTERS | $15,149,061 | 1 |
| 10 | 517312 | WIRELESS TELECOMMUNICATIONS CARRIERS (EXCEPT SATELLITE) | $13,138,800 | 1 |
| 11 | 518210 | DATA PROCESSING, HOSTING, AND RELATED SERVICES | $12,572,076 | 2 |
| 12 | 561450 | CREDIT BUREAUS | $8,654,392 | 1 |
| 13 | 513120 | PERIODICAL PUBLISHERS | $7,115,252 | 2 |
| 14 | 541990 | ALL OTHER PROFESSIONAL, SCIENTIFIC, AND TECHNICAL SERVICES | $4,201,000 | 5 |
| 15 | 511210 | SOFTWARE PUBLISHERS | $2,677,501 | 3 |
| 16 | 236220 | COMMERCIAL AND INSTITUTIONAL BUILDING CONSTRUCTION | $2,292,698 | 2 |
| 17 | 541211 | OFFICES OF CERTIFIED PUBLIC ACCOUNTANTS | $1,670,220 | 1 |
| 18 | 621511 | MEDICAL LABORATORIES | $1,290,524 | 2 |
| 19 | 541714 | RESEARCH AND DEVELOPMENT IN BIOTECHNOLOGY (EXCEPT NANOBIOTECHNOLOGY) | $1,253,293 | 2 |
| 20 | 621111 | OFFICES OF PHYSICIANS (EXCEPT MENTAL HEALTH SPECIALISTS) | $1,101,222 | 1 |
| 21 | 611430 | PROFESSIONAL AND MANAGEMENT DEVELOPMENT TRAINING | $1,099,978 | 1 |
| 22 | 621512 | DIAGNOSTIC IMAGING CENTERS | $975,446 | 2 |
| 23 | 541380 | TESTING LABORATORIES AND SERVICES | $867,755 | 1 |
| 24 | 561621 | SECURITY SYSTEMS SERVICES (EXCEPT LOCKSMITHS) | $805,590 | 1 |
| 25 | 812320 | DRYCLEANING AND LAUNDRY SERVICES (EXCEPT COIN-OPERATED) | $774,900 | 1 |
| 26 | 811310 | COMMERCIAL AND INDUSTRIAL MACHINERY AND EQUIPMENT (EXCEPT AUTOMOTIVE AND ELECTRONIC) REPAIR AND MAINTENANCE | $681,584 | 1 |
| 27 | 561210 | FACILITIES SUPPORT SERVICES | $583,446 | 2 |
| 28 | 561612 | SECURITY GUARDS AND PATROL SERVICES | $409,896 | 1 |
| 29 | 621999 | ALL OTHER MISCELLANEOUS AMBULATORY HEALTH CARE SERVICES | $267,000 | 1 |
| 30 | 811210 | ELECTRONIC AND PRECISION EQUIPMENT REPAIR AND MAINTENANCE | $250,690 | 5 |
| 31 | 339112 | SURGICAL AND MEDICAL INSTRUMENT MANUFACTURING | $236,318 | 2 |
| 32 | 541330 | ENGINEERING SERVICES | $235,841 | 2 |
| 33 | 562112 | HAZARDOUS WASTE COLLECTION | $181,940 | 2 |
| 34 | 562111 | SOLID WASTE COLLECTION | $158,786 | 1 |
| 35 | 334510 | ELECTROMEDICAL AND ELECTROTHERAPEUTIC APPARATUS MANUFACTURING | $141,538 | 3 |
| 36 | 334516 | ANALYTICAL LABORATORY INSTRUMENT MANUFACTURING | $130,162 | 2 |
| 37 | 561410 | DOCUMENT PREPARATION SERVICES | $130,000 | 2 |
| 38 | 812332 | INDUSTRIAL LAUNDERERS | $78,866 | 1 |
| 39 | 333316 | PHOTOGRAPHIC AND PHOTOCOPYING EQUIPMENT MANUFACTURING | $77,786 | 2 |
| 40 | 238220 | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS | $75,379 | 2 |
| 41 | 517111 | WIRED TELECOMMUNICATIONS CARRIERS | $71,449 | 1 |
| 42 | 541930 | TRANSLATION AND INTERPRETATION SERVICES | $71,428 | 1 |
| 43 | 237110 | WATER AND SEWER LINE AND RELATED STRUCTURES CONSTRUCTION | $42,021 | 2 |
| 44 | 334512 | AUTOMATIC ENVIRONMENTAL CONTROL MANUFACTURING FOR RESIDENTIAL, COMMERCIAL, AND APPLIANCE USE | $35,170 | 1 |
| 45 | 325998 | ALL OTHER MISCELLANEOUS CHEMICAL PRODUCT AND PREPARATION MANUFACTURING | $30,573 | 1 |
| 46 | 238210 | ELECTRICAL CONTRACTORS AND OTHER WIRING INSTALLATION CONTRACTORS | $27,632 | 1 |
| 47 | 325120 | INDUSTRIAL GAS MANUFACTURING | $26,750 | 1 |
| 48 | 339114 | DENTAL EQUIPMENT AND SUPPLIES MANUFACTURING | $25,000 | 1 |
| 49 | 333244 | PRINTING MACHINERY AND EQUIPMENT MANUFACTURING | $20,768 | 1 |
| 50 | 561720 | JANITORIAL SERVICES | $17,000 | 1 |
| 51 | 813920 | PROFESSIONAL ORGANIZATIONS | $12,379 | 1 |
| 52 | 332510 | HARDWARE MANUFACTURING | $11,054 | 1 |
| 53 | 561990 | ALL OTHER SUPPORT SERVICES | $10,000 | 1 |