New numbers detailing nuclear weapon ownership in Metal Gear Solid V: The Phantom Pain have been released via the official Japanese Metal Gear account. Since the last update, numbers went up all platforms, except for the PS4, where nukes decreased by 15. On Xbox One nukes increased by 3.
The current numbers, as of July 21st, are as follows:
Xbox One: 165
Xbox 360: 323
Since last update:
Number of nukes went up
Number of nukes went down
Source: Metal Gear Official Japanese Twitter (1,2)