| Characteristic | 2017 | 2018 | 2019 | 2020 | 2021 |
|---|---|---|---|---|---|
| - | - | - | - | - | - |
| - | - | - | - | - | - |
| - | - | - | - | - | - |
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Source
Release date
June 2021
Region
Worldwide
Survey time period
2017 to 2021
Special properties
fiscal year ended March 31 of each year.
Supplementary notes
Values prior to 2020 were taken from previous editions.
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