Global sales of pre-recorded music total more than $40 billion.
In 1900, the price of gold was less than $40 per ounce. It reached $600 in 1930, now struggling to reach $400 per ounce.
In 1955 the richest woman in the world was Mrs Hetty Green Wilks, who left an estate of $95 million in a will that was found in a tin box with four pieces of soap.
Money notes are not made from paper, it is made mostly from a special blend of cotton and linen.
A million dollars’ worth of $100 bills weighs only 10 kg (22 lb).
The term “smart money” refers to gamblers who have inside information or have arranged a fix, the gambling term for insuring the outcome of an event by illegal methods.