| Characteristic | September 2011 | September 2012 |
|---|---|---|
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
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Source
Release date
November 2012
Region
United States
Survey time period
September 2011 and September 2011
Age group
13 years and older
Special properties
Mobile phone subscribers
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