It’s no secret that we’re a stressed out bunch. The national Stress in America survey, an annual analysis by Harris Interactive for the American Psychological Association, found 35% of adults polled since 2007 feel more stress this year compared to last year, and 53% said they received little or no support from their health care providers in coping with their stress. What’s causing all our anxiety? Who is the most angst-ridden generation? Test your knowledge of what is behind stress in America.