according to the US government CPI, inflation 1990-2017 was 2.43%, not 4.15%.
http://www.dollartimes.com/inflation/inflation.php?amount=1&year=1990
IOW if the price of gold is to be believed (???) as a measure of inflation, the USG lies.
Hypotethical scenario: If i put $1200 of US$ into a safe in 1990 and took it out today, I could have bought 3 krugerrands in 1990, but only one krugerrand today. Who has the two missing krugerrands today that i could have put in the safe had i bought gold in 1990?
if you want to know the real rate of inflation, don’t bother with the CPI
Perianne Boring
Feb. 3, 2014
forbes