| Characteristic | 2017 | 2018 |
|---|---|---|
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
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Source
Release date
March 2019
Region
Worldwide
Survey time period
2017 and 2018
Supplementary notes
* South Korea and Turkey may be included in "Rest of world" in 2017.
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