| Characteristic | Members in thousands |
|---|---|
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
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Source
Release date
May 2017
Region
North America
Survey time period
2000 to 2016
Supplementary notes
Figures before 2007 have been taken from previous editions.
The figures have been rounded.
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