How many years Bitcoin will need to become No.1 ?
I'll take a guess on this one. If bitcoin reaches the speculation of $250,000 and $1,000,000 I think bitcoin will become the no. 1 currency depending on the value of currency in the circulation.
This is showing that its a currency for the future. This graph is really showing acceptance in near future. We need to buy more coins.

Just like what I'm saying before on what I have read that bitcoin is the future. Wherever is this graph came from, this is truly an amazing inspiration especially for those investors who are already giving up because of the past correction.
I agree with you here. This graph is seriously awesome and it shows how powerful a force Bitcoin truly is. Being ranked among the top FIAT currencies itself is a huge feat which is why I feel that Bitcoin will dominate all FIAT and emerge as the number one currency in the world in the future once it goes mainstream. It has truly been a long journey and Satoshi himself would be proud of how far this anonymous beauty has come. I am proud to be an owner of a couple of Bitcoins(Not revealing how many though) and will continue HODLING for the next couple of years until Bitcoin reaches $100k.