| Item | Obligations |
|---|---|
| Computer Systems Design Services | $4.3B |
| Engineering Services | $3.8B |
| Other Computer Related Services | $3.7B |
| Administrative Management and General Management Consulting Services | $2.3B |
| All Other Professional, Scientific, and Technical Services | $1.7B |
| Software Publishers | $1.2B |
| Custom Computer Programming Services | $1.1B |
| Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | $1.1B |
| Telecommunications Resellers | $901M |
| Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services | $856M |
Computer Systems Design Services was the largest industry in District of Columbia, with $4.3B obligated.