The twenty euro note (€20) is the third-lowest value euro banknote and has been used since the introduction of the euro (in its cash form) in 2002.[8] The note is used by the 23 countries and a population of 343 million as their sole currency, with 22 legally adopting it.[9] In June 2020, there were approximately 4,286,000,000 twenty euro banknotes in circulation around the eurozone.