What's Our Current Use of Hydrogen?

Scientists have done an estimate of how much hydrogen there may be. And by one estimate, there may be enough hydrogen trapped in pockets under the ground to meet our current use of hydrogen for thousands of years. The catch is we don't know if this is all correct or not. If it may turn out to be a bust, but if it turns out to be true, the other potential cast is how much will it cost to get it out of the ground?