A group of serious programmers were working on it, and by the end of 2015, they launched the new cryptocurrency, the Ethereum.
The system, just like Bitcoin, operates according to its own rules, nobody can influence it, including the programmers creating Ethereum.
In 2015, 1 pc Ethereum was worth $1.65, and in 2017, the price of 1 Ethereum was $301.7. So the exchange rate increased by X182.
You can find the actual exchange rate here: