| Characteristic | 2008 | 2009 |
|---|---|---|
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
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Source
Release date
December 2009
Region
Worldwide
Survey time period
2008 and 2009
Number of respondents
1,336 respondents
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