| Characteristic | Shipments in million units |
|---|---|
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
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Source
Release date
February 2018
Region
United States
Survey time period
2008 to 2017
Supplementary notes
The figures for 2008 to 2013 are taken from previous editions.
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