| Characteristic | Number of items in catalogue in millions |
|---|---|
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
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Source
Release date
December 2018
Region
Worldwide
Survey time period
as of December 2018
Supplementary notes
All figures are estimates.
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