As of 5/12/17 there are 30 coins and tokens with market cap over $400 mln. In recent history many coins and tokens went up 20 times and more in price. Would this happen to Gridcoin we get 1GRC=1USD exchange rate. Basically I have assumed user base and exchange rate of GRC is up 20x or so. In the table there are numbers for current (0.05) and hypothetical future (1) exchange rate, also current (~5000) user base and hypothetical higher future popularity / number of participants.