In True Dollars™, which is the only accurate measure of buying power, the spot price of natural gas is up slightly over 50% year-over-year.
Likely the cause of this great increase is the fall off of oil production owing to the economy suffering from the greatest depression (see: Q1 2017 GDP IN TRUE DOLLARS™ SHOWS THE GREATEST DEPRESSION IS STILL ON. THE OBAMA PRESIDENCY WAS AMONG THE WORST, PERHAPS ALL-TIME.) combined with increasing application of clean- burning natural gas.
You can get these charts from the Commodities menu above. So there is no need to bookmark this page. Merely keep the True Dollar Journal as your go-to source.