What are the most profitable businesses?

According to Forbes the most profitable businesses are professional services--accounting, law, design and medical-related firms--accounted for eight of the top 10

1. Accounting services

2. Legal Services

3. Dental Services

4. Specialized Design Services

5. Other "Health Practitioners

6. Outpatient Care Centers

7. Insurance Brokers

8. Physicians Offices

9. Medical and Diagnostic Labs

10. Depository Credit Intermediation