No need to wait until five years. Now every day crypto currency users always increase. Millions of new crypto currency users are increasing and they are starting to join crypto currencies. Many people are curious about crypto currencies and then increasingly active in crypto currencies. I estimate that in less than five years, as many as one billion people using crypto currencies will be quickly exceeded. I am sure that with the crypto currency, economic growth will be faster. A lot of money is circulating and moving so the economy can be more stable. Moreover this movement is not only national but international.