| Item | Obligations |
|---|---|
| Computer Systems Design Services | $3.2B |
| Engineering Services | $2.8B |
| Other Computer Related Services | $2.6B |
| Administrative Management and General Management Consulting Services | $1.6B |
| All Other Professional, Scientific, and Technical Services | $1.3B |
| Custom Computer Programming Services | $804M |
| Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | $736M |
| Software Publishers | $728M |
| Telecommunications Resellers | $726M |
| Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services | $601M |
Computer Systems Design Services was the largest industry in District of Columbia, with $3.2B obligated.