| Characteristic | Expenditure in million U.S. dollars |
|---|---|
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
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Source
Release date
February 2019
Region
Worldwide
Survey time period
2008 to 2018
Supplementary notes
Figures for 2008-2015 were taken from previous annual reports.
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