Right, but you're making it sound like they have stopped producing which they have not.

So with that stated, with  consumption levels averaging the way they do ongoingly, as well as production levels, those being neutralized with an inject or draw every here and there...then that is basically like an infinite supply unless there is a MAJOR sudden shock in supply and/or demand. 

mind you, injects weigh heavier than draws if you look historically, which is the reaosn why such a storage amount was even possible to being attained.