December of this year. 50k at the end of next year, 150k at the end of 2019 and 500k at the end of 2020.
Fiat is no limitation. There's more derivatives than fiat in the world.
I wish you could be right, as I would be very rich, but I do not think it will go that fast. Rather, I believe it will be more 6000$ this year, 10 000$ next year, 20 000$ by the end of 2019 and 50 000$ by 2020 because of the halving.