A look at the "International versions" section of The Office Wikipedia page reveals that the British original has inspired five remakes in foreign countries (the US, France, Germany, French-speaking Canada, and Chile) with a sixth (in Russia) set to premiere soon. That will be six versions, plus the original, in just seven years since the series premiered.
The reigning king of foreign remakes is, of course, Sesame Street, which has seen thirty-two different international co-productions since it premiered in 1969. The Office has quite a long way to go if it wants to catch up.
Of course, after Sesame Street had been on four seven years (1969-1976), it had only inspired three other versions - in the Netherlands, Germany, and Brazil. The Office has twice that already.
In conclusion, The Office is on pace to have sixty-four international versions by the year 2040.