| Characteristic | Exposure in minutes |
|---|---|
| - | - |
| - | - |
| - | - |
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Source
Release date
January 2017
Region
Worldwide
Survey time period
2014 to 2016
Special properties
estimate
Supplementary notes
* Figures calculated by ÌÇÐÄÆÆ½â°æ on the basis of the 2016 figure and growth rates provided by the source.
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