| Characteristic | Number of units |
|---|---|
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
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Source
Release date
October 2018
Region
China
Survey time period
2012 to 2017
Supplementary notes
Figures for earlier years have been taken from previous publications.
Number for 2015 is not available.
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