| Characteristic | Yes | No | Don't know or not applicable |
|---|---|---|---|
| - | - | - | - |
| - | - | - | - |
| - | - | - | - |
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Source
Sources
Release date
October 2017
More information
Region
Worldwide
Survey time period
2014 to 2017
Number of respondents
1,876 respondents
Supplementary notes
* The source did not provide data for the 2014-15 survey.
Percentage points exceeding 100 percent are probably due to rounding.
The survey did not provide the survey method or age of respondents.
Number of respondents for previous surveys:
2013-14: 1,270 respondents
2015-16: 1,679 respondents.
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