| United States Department of Agriculture |
55,552 |
| United States Department of Health and Human Services |
52,267 |
| University of Iowa |
32,170 |
| Government of Ontario, Canada |
31,551 |
| University of Michigan |
29,718 |
| The University of Georgia |
26,391 |
| Florida State University |
21,721 |
| University of Wisconsin-Madison |
20,578 |
| State of Minnesota |
20,288 |
| State of Connecticut |
19,853 |
| National Institutes of Health |
19,511 |
| Government of Alberta |
18,367 |
| University of Rochester |
17,275 |
| PricewaterhouseCoopers, LLP |
16,290 |
| Abbott Laboratories |
15,820 |
| Keller Williams |
14,644 |
| New York University |
14,281 |
| Arizona State University |
12,778 |
| State of Utah |
12,628 |
| RMIT University |
12,453 |
| Public Works and Government Services Canada (PWGSC) |
12,449 |
| United States Department of Energy |
12,280 |
| Indian Health Service |
12,185 |
| Baylor College of Medicine |
12,159 |
| United States Air Force |
11,944 |
| CB Richard Ellis Group, Inc. |
11,790 |
| Provincial Government of British Columbia |
11,535 |
| Food & Drug Administration |
11,107 |
| Royal LePage Real Estate Services |
10,741 |
| United States National Forest Service |
9,912 |
| Pennsylvania State University |
9,848 |
| City College of NY |
9,609 |
| National University of Singapore |
9,571 |
| United States Navy |
9,364 |
| State of California- Public Utilities Commission |
9,306 |
| North Carolina State University |
8,330 |
| University of British Columbia |
8,232 |
| University Of Nottingham |
8,103 |
| Veterans Health Administration |
7,739 |
| North East ISD |
7,660 |
| University of Texas Health Science Center at San Antonio |
7,551 |
| UBS Financial Services Inc. |
7,383 |
| Weichert Realtors |
7,030 |
| Florida International University |
6,972 |
| Mississippi State University |
6,948 |
| State of New Hampshire |
6,824 |
| United States Department of Veterans Affairs |
6,694 |
| Canadian Imperial Bank of Commerce |
6,613 |
| University of Alabama at Birmingham |
6,514 |
| Fairfax County Public Schools |
6,464 |
| Natural Resources Canada |
6,435 |
| Hilton Worldwide |
6,274 |
| United States Army |
6,156 |
| Wells Fargo Advisors, LLC |
6,085 |
| Community College of Baltimore County |
6,080 |
| Michigan State University |
6,009 |
| University of California, Los Angeles |
5,923 |
| University of South Australia |
5,876 |
| UC Riverside |
5,874 |
| GlaxoSmithKline plc. |
5,821 |
| University of Wollongong |
5,720 |
| San Jose State University |
5,671 |
| SunGard Data Systems Inc. |
5,667 |
| University of Colorado System |
5,661 |
| University of Illinois at Chicago |
5,576 |
| Portland Community College |
5,494 |
| Marriott International, Inc. |
5,368 |
| State Government of Alaska |
5,340 |
| McGill University Health Center |
5,312 |
| SAP America, Inc. |
5,275 |
| Kent State University |
5,216 |
| ERA Vacation Properties |
5,193 |
| University of Otago |
5,110 |
| State of Texas (USA) |
4,992 |
| Centers for Disease Control and Prevention |
4,974 |
| Long & Foster Real Estate, Inc. |
4,947 |
| American International Group (AIG) |
4,869 |
| US General Services Administration (GSA) |
4,834 |
| Purdue University |
4,779 |
| Government of Canada - Canadian Food Inspection Agency |
4,733 |
| State University of New York, University at Buffalo |
4,723 |
| Service Canada |
4,668 |
| Century 21 |
4,665 |
| University of Victoria |
4,646 |
| Oklahoma State University |
4,590 |
| Novartis Corporation |
4,582 |
| University of Central Florida |
4,527 |
| City of Philadelphia, Pennsylvania |
4,515 |
| Prudential Financial, Inc. |
4,488 |
| Columbia University |
4,372 |
| Prince William Sound Community College |
4,352 |
| Humber College |
4,344 |
| Bristol-Myers Squibb Company |
4,281 |
| University of Hawaii |
4,226 |
| Case Western Reserve University |
4,193 |
| John L. Scott, Inc. |
4,165 |
| Windermere Services Company |
4,160 |
| 3M Company |
4,130 |
| University of North Carolina |
4,105 |
| California Polytechnic State University, San Luis Obispo |
4,099 |
| Boston Scientific Corporation |
4,076 |
| City of Madison Metro School District |
4,071 |
| United States Environmental Protection Agency |
4,057 |
| University of Wyoming |
4,054 |
| Colliers International Property Consultants, Inc. |
4,036 |
| Princeton University |
4,010 |
| University College London |
3,987 |
| Xerox Corporation |
3,938 |
| Medicine, Nursing and Health Sciences - Monash University |
3,892 |
| Cass Business School |
3,875 |
| King County, Washington |
3,797 |
| University of Puget Sound |
3,767 |
| University of Chicago Hospitals |
3,752 |
| Memorial Health Services |
3,731 |
| American Express Company |
3,728 |
| New York Life Insurance Company |
3,697 |
| California Institute of Technology |
3,671 |
| Deakin University |
3,671 |
| City |
3,612 |
| Federal Government Of United Kingdom |
3,587 |
| Broadcom Corporation |
3,580 |
| BP British Petroleum |
3,566 |
| Georgia Southern University |
3,562 |
| AstraZeneca PLC |
3,553 |
| University of Glasgow |
3,553 |
| Montgomery County Public Schools |
3,543 |
| Johnson County Community College |
3,468 |
| Primerica |
3,375 |
| United States Department of Homeland Security |
3,319 |
| Eli Lilly and Company |
3,303 |
| State of Michigan |
3,273 |
| DePaul University |
3,258 |
| McKesson Corporation |
3,256 |
| St Petersburg College |
3,214 |
| Suffolk County Community College |
3,186 |
| Indiana University-Purdue University at Fort Wayne |
3,185 |
| Stanford University |
3,183 |
| Delaware Technical & Community College Central Office |
3,145 |
| University of Arkansas |
3,107 |
| Barclays Capital Inc. |
3,084 |
| University of Connecticut Health Center |
3,072 |
| University of Texas Arlington |
3,054 |
| Federal Aviation Administration |
3,044 |
| University of Nevada, Las Vegas |
3,043 |
| City of Richmond - Virginia |
3,029 |
| Alcatel-Lucent Technologies Inc. |
2,997 |
| The University of Texas at Austin |
2,991 |
| Genzyme Corporation |
2,990 |
| Commonwealth of Massachusetts |
2,907 |
| Florida State College at Jacksonville |
2,893 |
| The College of William & Mary |
2,867 |
| University of Cape Town |
2,849 |
| State of Washington (USA) |
2,809 |
| The University of North Carolina at Charlotte |
2,794 |
| CBS Corporation |
2,793 |
| Enterprise Rent-A-Car Company |
2,765 |
| EMCOR Group, Inc. |
2,705 |
| United States Department of the Treasury |
2,681 |
| Procter & Gamble Company |
2,675 |
| Trinity College Dublin |
2,656 |
| Baxter International Inc. |
2,637 |
| British Telecom Group Plc |
2,631 |
| North Carolina Office of Information Technology Services |
2,625 |
| Starwood Hotels and Resorts Worldwide, Inc. |
2,613 |
| University Of Canberra |
2,606 |
| St. John's University |
2,598 |
| University of Virginia |
2,576 |
| Northumbria University |
2,553 |
| SAP |
2,546 |
| ARPANSA |
2,536 |
| Bonneville Power Administration |
2,520 |
| The McGraw-Hill Companies, Inc. |
2,505 |
| Unversity Of Bristol FRPERC |
2,501 |
| National Science Foundation |
2,498 |
| Brown University |
2,478 |
| Takeda Pharmaceuticals North America, Inc. |
2,433 |
| Industry Canada |
2,432 |
| Tarrant County Junior College |
2,423 |
| CA INC |
2,409 |
| Fifth Third Bank |
2,402 |
| Lansing Community College |
2,382 |
| International Paper |
2,376 |
| General Mills, Inc. |
2,333 |
| H&R Block |
2,331 |
| Board Education Prince George County |
2,329 |
| The University of Western Australia |
2,320 |
| City of Los Angeles |
2,320 |
| NetApp Inc |
2,306 |
| Cecil County Public Schools |
2,298 |
| Jones Lang LaSalle Incorporated |
2,297 |
| UnitedHealth Group Incorporated |
2,278 |
| Gannett Co., Inc. |
2,275 |
| Kinetic Concepts, Inc. |
2,268 |
| Hofstra University |
2,264 |
| Canadian Heritage |
2,255 |
| CVS / Caremark Corporation |
2,253 |
| Santa Ana Unified School District |
2,253 |
| University of Missouri |
2,230 |
| Tyson Foods, Inc. |
2,213 |
| University of Salford |
2,205 |
