Probably due to inflation (excessive printing of US dollars), rather than simple supply and demand.
Or probably just flat out lies coming from the MSM.
Considering we just had a NY Slimes article that advocated for high gas prices to reduce use, I don’t believe a damn word of this article.
By 2020:
Oil will be up 50%
Food will be up 50%
Housing will be up 50%
Gold will be up 50%
The only thing common to all these things is the paper dollars we use to pay for them. It’s a good thing none of them are used to calculate the Inflation Rate, or we might have inflation!