| Characteristic | 2016 | 2017 |
|---|---|---|
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
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Source
Release date
June 2017
Region
Worldwide
Survey time period
2016 and 2017
Method of interview
Online survey
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