James, over at The Kansas Citian, has a good post on the price of crude oil across the decades as compared to other speculation commodities, like silver.
"The cost of a gallon of gas in 2002 was about $1.35. Today it is at $4.08. A growth of 302%
In 2002 the cost of one ounce of silver was $4.60. Today it is $17.32. A growth of 377%."
As you can see from just this small time period the value of oil has stayed relatively similar to the value of silver compared to the US dollar. In fact, silver has increased in cost slightly higher than oil. That's not a good sign for our supply and demand friends, but what happens if we go back farther than just five years?