| Characteristic | 2015 | 2022 |
|---|---|---|
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
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Source
Release date
August 2016
Region
Worldwide
Survey time period
2015
Supplementary notes
The 2015 figure is already accurate.
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