Figure 15 extrapolates the growth rate of the main global reserve currencies' broad money supply and gold over the past 25 years into the next 25 years, and increases the supply of bitcoins by the programmed growth rates. By these calculations, the bitcoin supply will increase by 27% in the coming 25 years, whereas the supply for gold will increase by 52%, the Japanese yen by 64%, the Swiss franc by 169%, the U.S. dollar by 272%, the euro by 286%, and the British pound by 429%.