| Characteristic | 2004 | 2014* |
|---|---|---|
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
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Sources
Release date
November 2014
Region
Worldwide
Survey time period
2004 and 2014
Supplementary notes
This statistic was assembled from several editions of the same publication.
* Forecast.
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