Demand must be a lot higher than it used to be, or we wouldn't have been able to sell the reserve fast enough to deplete it. As the price rises, some uses of it

Demand must be a lot higher than it used to be, or we wouldn't have been able to sell the reserve fast enough to deplete it. As the price rises, some uses of it won't be worth the cost, and critical uses will have to become more efficient. I doubt demand will drop so much that there will be a large reserve again.