Sammy Jankis
Was it me?
the OP implies that the rate increase is primarily responsible for the revenue decrease. The onus is there to prove that.
Clearly, if you do not know or cannot measure how much of the consumption decrease is due to the increase in tolls, you cannot assert that raising the tolls caused the revenues to go down, can you?
Nor can you assert the opposite, sans adequate data.
Onus?