From 1992, the EU Summit signed the EU Treaty in Maastricht, the Netherlands, and decided to implement the single currency euro on 1999 1, and implement a unified monetary policy in countries that implement the euro. On June 5438+1 October1in 2002, euro banknotes and coins were officially circulated, but the EU member countries Britain, Sweden and Denmark decided not to join the euro zone for the time being. On June 65438+1 October1day, 2007, Slovenia joined the euro zone. On June 65438+1 October1day, 2008, Malta and Cyprus (excluding Northern Cyprus) formally joined the euro zone. On June 65438+1 October1day, 2009, Slovakia officially joined the euro zone. 20 1111October1,Estonia officially joined the euro zone. 20 14 65438+ 10/month 1, Latvia officially became a member of the euro zone. 20 1 5 65438+1October1,Lithuania officially became a member of the euro zone.

During the period of 1992, the EU Summit signed the EU Treaty in Maastricht, the Netherlands, and decided to implement the single currency euro on 1999 and 1, and to implement a unified monetary policy in countries that implement the euro. 1 99965438+1October 1 1 The then 15 members of the European Union: Germany, France, Italy, Netherlands, Belgium, Luxembourg, Ireland, Spain, Portugal. 1June 1998, the European Central Bank was formally established in Frankfurt. 1999 1, the euro enters the international financial market, and banks and stock exchanges are allowed to trade in euros. Euro banknotes and coins were officially circulated in June 2002. In July 2002, the domestic currency withdrew from circulation, and the euro became the only legal tender in the euro zone.

200 1 1 1, Greece joined the euro zone. On June 65438+1 October1day, 2007, Slovenia joined the euro zone. On June 65438+1 October1day, 2008, Cyprus and Malta joined the euro zone. On June 65438+1 October1day, 2009, Slovakia joined the euro zone. 20 1111October1,Estonia joined the euro zone. 20 14 65438+ 10/month 1, Latvia officially became a member of the euro zone. 20 1 5 65438+1October1,Lithuania officially became a member of the euro zone. The number of members of the euro zone has increased from the initial 1 1 to 19 in 20 15 years.

As Britain, Sweden and Denmark decided not to join the euro zone for the time being. 20 15， Countries that use the euro are Germany, France, Italy, Netherlands, Belgium, Luxembourg, Ireland, Greece, Spain, Portugal, Austria, Finland, Slovenia, Cyprus, Malta, Slovakia (joined on June 65438+ 10/day, 2009) and Estonia (20/KLOC). Kloc-0/4, 1 day) and Lithuania (20654438+0) joined the euro zone with 19 member countries and a population of over 320 million.

2011165438+1in the early morning of October 2, according to relevant media reports, due to the government debt crisis, Greece, a member of the euro zone, plans to hold a referendum to decide whether to leave the euro zone.

20 13 On July 9th, the ministers of economy and finance of the 28 member states of the European Union formally approved Latvia to join the euro zone 20 14 1.

Latvia officially became the 18 member of the euro zone on 20 14 1. 1 Euro to 0.702804 Latvian Lat. 20 14 and 1 Latvia issue euro currency.

20 14 on July 23rd, the finance ministers meeting of the European Council passed a resolution, agreeing that Lithuania will join the euro zone from 20 15 1 and use the euro as its national currency. Lithuania thus became the 19 member of the euro zone. According to the resolution of the European Council, Lithuania's transition period to the euro is five months, and the exchange rate between Lithuanian currency and the euro is 3.4528 Lit 1 Euro.