Why do we donate occupation JD25000 per day??

Why do we donate occupation JD25000 per day??
الرابط المختصر

Donations are meant to be optional, which means that a person is free to pay this amount or not. In this case, this issue applies on us as Arabs in general, although the individual citizen thinks he is obliged to pay this donation for occupying forces. What is this donation and how do I reached to this amount. Is it really possible to stop paying this donation without any domestic effect?