| Characteristic | 2013 | 2014 | 2015 |
|---|---|---|---|
| - | - | - | - |
| - | - | - | - |
| - | - | - | - |
| - | - | - | - |
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Source
Release date
December 2015
Region
United States
Survey time period
2013 to 2015 (2015: September 2015)
Number of respondents
> 1,200
Age group
18 years and older
Method of interview
Online survey
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