The Black line in that chart is real, I have seen that representation before and to the best of my knowledge its accurate. However, just a little thought will clearly show you that the red line cant possibly be correct.
Look at what it actually says, there is absolutely no possible way that adjusted to 2011 monetary values that 1980 would be that high. In the three years from 1977 to 1980 the purchasing power of gold went from $400 ounce to $2466. So according to the chart $130 was equivalent to $400 in 2011 and just three years later $850 was equivalent to $2466. Then in a year the price of gold goes up $200 while the equivalent buying power drops $1066 over night. That's absurd. The cost of goods would have had to have dropped to ridiculous lows for that to even be remotely true, then they would have had to have rocketed up in price an obscene amount. That would be like going to the store for a can of soda at 50 cents, then having it cost 3 cents a year later, then find it costing 3 dollars the year after that.
That's absurd
Regardless of any other argument you could nit pick on this chart, there is no possible way that gold in 1980 had $766 more purchasing power than it does now, 32 years later.
In 1980
[FONT=Arial, Helvetica, sans-serif]Cost of a new home: [/FONT]
[FONT=Arial, Helvetica, sans-serif]$76,400.00 [/FONT]
[FONT=Arial, Helvetica, sans-serif]Cost of a new car: [/FONT]
[FONT=Arial, Helvetica, sans-serif]$ 7,210.00[/FONT]
[FONT=Arial, Helvetica, sans-serif]Median Household Income: [/FONT]
[FONT=Arial, Helvetica, sans-serif]$17,710.00 [/FONT]
[FONT=Arial, Helvetica, sans-serif]Cost of a first-class stamp: [/FONT]
[FONT=Arial, Helvetica, sans-serif]$0.15 [/FONT]
[FONT=Arial, Helvetica, sans-serif]Cost of a gallon of regular gas: [/FONT]
[FONT=Arial, Helvetica, sans-serif]$1.25 [/FONT]
[FONT=Arial, Helvetica, sans-serif]Cost of a dozen eggs: [/FONT]
[FONT=Arial, Helvetica, sans-serif]$0.91 [/FONT]
[FONT=Arial, Helvetica, sans-serif]Cost of a gallon of Milk: [/FONT]
[FONT=Arial, Helvetica, sans-serif]$1.80 [/FONT]