http://fortune.com/2017/05/13/bitcoin-prices-2/Bitcoin has shown amazing, and fairly steady, growth over the last year.
A single bitcoin was worth just $455 in May 2016. And even after retrenching slightly from a record Thursday high of over $1,800 per token, it has shown a stunning 286% annual return, based on prices from CoinMarketCap.
As with most assets, explaining bitcoin’s bull stampede is more art than science. Bitcoin's price is fundamentally linked to how many people use the system to send money. But it's currently mostly driven by speculators, who trade on their belief that it will become more popular in the future. Positive news on that front has been plentiful in the last three months in particular.
Globally, Bitcoin is being treated with a great deal more respect by regulators. Positive comments about blockchain by Minneapolis Federal Reserve President Neel Kashkari coincided with the latest Bitcoin price surge. Japan approved Bitcoin as a legal method of payment in early April, and Chinese regulators have made progress in squaring Bitcoin usage with that country’s tight capital controls.
... Cont in article the end was amusing