| Characteristic | Share of respondents |
|---|---|
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
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Source
Release date
January 2018
Region
Worldwide
Survey time period
2012 to 2017
Number of respondents
140 respondents
Supplementary notes
The source doesn't mention the survey method, age of the respondents and the number of respondents from previous years.
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