Situation @ The Netherlands: the Society closed in 2012 mainly all the foreign field congregations and let them merged into the Dutch congregations. A few foreign congregation (English language) still exists, the others (Most of all English, and all French, Arab, Papiamento, Russian) closed definitely down. That must be the reason of the decline of congregation numbers in The Netherlands.
The closing of the foreign field congregations was backed by the story that Dutch witnesses went to the foreign congregation for being out of sight of their original congregation, a kind of fade away.
Gorby