A friend sent me this.
http://www.ctbto.org/specials/1945-1...sao-hashimoto/
It is a little slow running and there is no way to speed it up. But it literally gives the big picture of when nuclear devices were tested, where, and by whom.
Only watch if you are a nuclear history buff. It will be very boring for anyone else to be honest.
For a while, the US had tested more devices than the rest of the world combined, but we dropped back a little with them pesky Indians and Pakistanis. The graphic does not include the North Korean tests (of which only one really counts anyway)
There are also some other terrestrial tests not counted and none of the exo-atmospheric tests are included for some reason.