
| Characteristic | Share of respondents |
|---|---|
| - | - |
| - | - |
| - | - |
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Source
Release date
May 2011
Region
United States
Survey time period
April 2004 to April 2011
Number of respondents
846*
Age group
18 years and older
Special properties
Internet users
Method of interview
Telephone interview
Supplementary notes
*Figure valid for 2011. The source does not give any information on the exact number of respondents for 2004 and 2007.
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