| Characteristic | Revenue in thousand U.S. dollars |
|---|---|
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
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Source
Release date
April 2019
Region
United States
Survey time period
2011 to 2018
Supplementary notes
Figures prior to 2014 were taken from previous reports.
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