#Bitcoin 's USD exchange rate has increased ~150%/year since inception.
Currently 1 #BTC = ~37,000 USD
For the USD/BTC exchange rate to reach $100,000,000, will take:
44 years @ 20% growth rate
31 years @ 30% growth rate
24 years @ 40% growth rate
20 years @ 50% growth rate
17 years @ 60% growth rate
15 years @ 70% growth rate
14 years @ 80% growth rate
13 years @ 90% growth rate
12 years @ 100% growth rate
11 years @ 110% growth rate
10 years @ 120% growth rate
We're very likely to see a 7 or 8 figure Bitcoin price within our lifetimes.