The Watchtower Society in Norway has voluntarily and on their own initiative reduced their membership rolls in order to fit to the world wide practice of witnesses when it comes to membership enrollment.
Now, they only incluce baptized members, not children and non-baptized publishers in the number they report to the authorities. As a registered faith community, JWs, alike with all other registered religious and philosophical communities, receive support from the government. that is calculated on basis of the number of members... In times past they included children, thus making the membership into some 15,000, whereas now they report just slightly above 11,000. The money paid is a sort of repayment of taxes paid by inhabitants, as Norway has a state church. They give away several hundreds of thousands dollars by doing this.
I do not think one can play the greedy card against them in this case.
When a person gets baptized or DA or are DF they will get a certificate of enrollment or closure of enrollment.