| Item | Obligations |
|---|---|
| Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | $4.5B |
| Medicinal and Botanical Manufacturing | $3.4B |
| Power Boiler and Heat Exchanger Manufacturing | $2.1B |
| Aircraft Manufacturing | $1.6B |
| Drugs and Druggists' Sundries Merchant Wholesalers | $1.6B |
| Military Armored Vehicle, Tank, and Tank Component Manufacturing | $1.5B |
| Direct Health and Medical Insurance Carriers | $635M |
| Ammunition (except Small Arms) Manufacturing | $454M |
| Engineering Services | $431M |
| Other Computer Related Services | $297M |
Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) was the largest industry in Pennsylvania, with $4.5B obligated.