This chart shows the retail price of gasoline in the US, given as mg of gold per gallon of gas. It is based on an average price for regular gas in all areas of the country, sampled weekly by the Energy Information Administration.
Prices for gasoline were fairly stable from 1990 to 1999, oscillating around 100 mg/gal. From 2000 to 2008, they became more volatile, varying from 100 to 200 mg, and averaging about 140 mg. In late 2008, as the economy collapsed, gas prices fell to a new low of 57 mg, and remain around 70 mg today. Yet over the time period covered by this chart, the dollar price of gas has gone from a little over $1.00 per gallon to around $4.00 per gallon.
As a child, I often saw gasoline for 25 cents per gallon – in the days when that meant a silver quarter. The melt value of that quarter today is almost $6, another way of pointing out that today's fuel prices, rather than being high, are actually close to their historic lows!