| Characteristic | Market share |
|---|---|
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
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Source
Release date
May 2018
Region
United States
Survey time period
2007 to 2018
Supplementary notes
* Forecast.
Figures prior to 2016 come from previous reporting .
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