The Boston Globe Reports that Dunkin’ Donuts was on to something when they coined their logo: “America runs on Dunkin’.”

According to a survey conducted by Dunkin’ Donuts and CareerBuilder, 32 percent of workers said they needed coffee to get through the workday and 43 percent said they were less productive without a cup of Joe.

The survey – completed by 3,600 workers nationwide – also compiled a list of the top 12 professionals who drink the most coffee.

In honor of National Coffee Day, here are the country’s top coffee drinkers.

1. Nurses

2. Physicians

3. Hotel workers

4. Designers/Architects

5. Financial/Insurance sales representatives

6. Food preparers

7. Engineers

8. Teachers

9. Marketing/Public Relations professionals

10. Scientists

11. Machine operators

12. Government workers

Read more at: The Boston Globe