Gallup first conducted its Honesty and Ethics poll in 1976 and has updated it each year since 1990. A handful of professions have been on the list every year, while others have been added periodically.
Nurses were added in 1999 and have been No. 1 every year but 2001, when firefighters claimed that spot in the aftermath of 9/11. Last year, nurses earned a record 89% very high/high score.