In 1926, there were about 20,000 millionaires in the USA (measured in 1926 dollars).
Currently, the USA has about 500,000 people with a net worth of $18 million or more (measured in 2026 dollars).
Due to inflation, $1 million in 1926 dollars is about the same as $18 million in 2026 dollars.
Hence, the USA has 25 times as many millionaires as it did in 1926 (measured in 1926 dollars).
Related: “The Philosophy of Money | Robert Breedlove interviews Stephen Hicks”
