The document summarizes information about the euro currency, including that it was launched in 1999 and adopted by 16 EU countries totaling 329 million citizens. It lists the eurozone countries and years they adopted the euro. Details are provided about euro coins and banknotes. Reasons for adopting the euro include ensuring stable economic growth and controlling inflation. Adopting the euro makes travel easier and decreases currency exchange costs for businesses. Estonia is considering adopting the euro to boost economic confidence and protect savings from currency devaluation.