Ninety percent of all bitcoins have been mined as of Monday morning, according to data from blockchain tracker Blockchain.com. The feat means 18.89 million bitcoins – of a maximum of 21 million – are now on the open market.
Reaching the milestone took nearly 12 years since the first bitcoins were mined on Jan. 9, 2009. However, the remaining supply is not expected to be mined until February 2140, based on network activity estimates and Bitcoin’s halving schedules.
Prices have mirrored the increasing supply as demand for newer bitcoin heats up. The asset exchanged hands for less than $0.10 when 10% of the supply was mined in early 2010, and hovered at $7.50 when 50% of the supply was mined in December 2012. As of press time, bitcoin trades at over $49,000, having declined 28% from its peak of $69,000 earlier this year, as per data from CoinGecko.