| Year | Revenue in million U.S. dollars |
|---|---|
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
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Region
United States
Survey time period
1990 to 2002
Supplementary notes
Data are only available until 2002.
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