Their answer:Strangely enough, there are multiple answers to this question, and the amount of money that exists changes depending on how we define it. The more abstract definition of money we use, the higher the number is.
In this data visualization of the world’s total money supply, we wanted to not only compare the different definitions of money, but to also show powerful context for this information. That’s why we’ve also added in recognizable benchmarks such as the wealth of the richest people in the world, the market capitalizations of the largest publicly-traded companies, the value of all stock markets, and the total of all global debt.
The end result is a hierarchy of information that ranges from some of the smallest markets (Bitcoin = $5 billion, Silver above-ground stock = $14 billion) to the world’s largest markets (Derivatives on a notional contract basis = somewhere in the range of $630 trillion to $1.2 quadrillion).
In between those benchmarks is the total of the world’s money, depending on how it is defined. This includes the global supply of all coinage and banknotes ($5 trillion), the above-ground gold supply ($7.8 trillion), the narrow money supply ($28.6 trillion), and the broad money supply ($80.9 trillion).