| Characteristic | Unit sales in millions |
|---|---|
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
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Sources
Release date
June 2018
Region
United States
Survey time period
2012 to 2017
Supplementary notes
Figures have been rounded. Figures prior to the 2013 to 2017 period come from previous reporting.
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