| Characteristic | Q4 '12 | Q4 '13 |
|---|---|---|
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
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Source
Release date
January 2014
Region
Worldwide
Survey time period
4th quarter 2012 and 4th quarter 2013
Supplementary notes
Values may not add up to 100 percent due to rounding.
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