| Characteristic | 2016 | 2017 |
|---|---|---|
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
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Sources
Release date
October 2017
Region
Worldwide
Survey time period
2016 and 2017
Number of respondents
1,876 respondents
Supplementary notes
Number of respondents for previous surveys:
2015-16: 1,679 respondents.
The survey did not provide the survey method or age of respondents.
Data for "other and not applicable" was not provided by the source.
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