| Item | Obligations |
|---|---|
| Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers | $1B |
| Research and Development in the Physical, Engineering, and Life Sciences | $1B |
| Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | $805M |
| Service Establishment Equipment and Supplies Merchant Wholesalers | $620M |
| All Other Miscellaneous Manufacturing | $578M |
| Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing | $289M |
| Advertising Agencies | $289M |
| Home Centers | $256M |
| Petroleum Refineries | $249M |
| All Other Miscellaneous Food Manufacturing | $192M |
Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers was the largest industry in Illinois, with $1B obligated.