[KarlInOhio]

When Roosevelt issued his infamous 1933 presidential diktat, forcing delivery (confiscation) of gold owned by private citizens to the government in exchange for compensation, gold was $20.67/oz. In January 1934, the price was raised to $35/oz and the U.S. government pocketed the difference - and essentially devalued the dollar by 69%.

Sloppy math. The dollar went from being worth 0.0484 oz. of gold to 0.0286 oz., or a drop of 0.0198 oz. 0.0198 drop/0.0484 original value = 40.9% drop in value.

Also I wouldn't count the $35/ounce value in 1971 as real. We weren't freely exchanging gold at that rate. The real market rate was higher, climbing from $37.87 to $43.48 over the year. http://66.38.218.33/scripts/hist_charts/yearly_graphs.plx

[allmost]

It is for all intents and purposes impossible to relate monetary value over past decades. They didn’t have M3 back then.