on this very day, many may no longer see 2017 as a great year for cryptocurrencies but to me it still is because 2017 set the record in terms all time high which has been broken to (16/12/2020). This very later part of 2020 for now appears to be the the golden time for crypto especially bitcoin.
In 2017, there was a real crypto explosion! Who managed to catch the wave became a real lucky guy! The yield of cryptocurrency for 2017 is simply colossal-33014%! No financial asset can boast such a level of profitability! I think many people are interested in the question when this can happen again.
From where did you got this 330x figure? I checked the charts and what you are saying is not true. Bitcoin gave a return of 22x during 2017. Some of the established altcoins such as Ethereum and Ripple gave higher returns, but none of them came close to 330x. The combined cryptocurrency market cap was $2.2 billion in 2017 January and by the end of the year it had increased to $350 billion. It is still quite high, but not exactly 330x.