This chart displays the percentage of hourly sleep Americans have gotten between 1942 and 2013. The chart then includes the net hours of sleep less than 6 and more than 7. Finally, the average number of hours is included at the end. There is a trend occurring: as the years progressed, the percentage of people sleeping for more than nine hours decreased. The average number of hours per night went from 7.9 in 1942 to 6.8 in 2013. I think this may reflect the difference in society between 1942 and 3 years ago. I have found that the amount of sleep one gets at night and the quality of sleep has a great deal to do with anxiety and other stressors in life, so I would make the assumption that the number of people in 1942 suffering from anxiety is less than the number of people suffering in 2013.
Jones, Jeffrey M. “In U.S., 40% Get Less Than Recommended Amount of Sleep.” Gallup. N.p., 13 Dec. 2013. Web. 3 Nov. 2016.