A series of national surveys on stress were conducted in 1983, 2006, and 2009. The data revealed the following trends based on employment status:

• Unemployed: Reported the highest stress levels, which peaked in 2006 and then declined by 2009.
• Retired: Consistently reported the lowest stress levels, which remained stable across all three surveys.
• Full-time employed: Experienced a steady increase in stress from 1983 to 2009.
• Part-time employed: Saw stress levels rise until