In 2017 alone, the price of Bitcoin rose from a little under $1,000 at the beginning of the year to close to $19,000, ending the year more than 1,400% higher. More recently, the cryptocurrency has declined in value and more-or-less plateaued, save for a few periods of relatively lower price figures (the early portion of 2019, when prices hovered around $3500) and relatively higher ones (June and July of 2019, when prices briefly peaked at over $13,000). As of October 2019, Bitcoin seems to have found a new price point in the range of $8,000 to $9,000.
Bitcoin's price is quite dependent on the size of its mining network, since the larger the network is, the more difficult – and thus more costly – it is to produce new bitcoins. As a result, the price of bitcoin has to increase as its cost of production also rises. The Bitcoin mining network's aggregate processing power is known as the "hash rate," referring to the number of times per second the network can attempt to complete a hashing puzzle necessary before a block can be added to the blockchain. As of October 23, 2019, the network reached a record high 114 quintillion hashes per second.
