Reserve currency economy, the German Deutsche Mark gained the status of the second most important reserve currency after the US dollar. When the euro was introduced on 1 January 1999, replacing the Mark, French franc and ten other European currencies, it inherited the status of a major reserve currency from the Mark. Since then, its contribution to official reserves has risen continually as banks seek to diversify their reserves, and trade in the eurozone continues to expand. Former U.S. Federal Reserve Chairman Alan Greenspan said in September 2007 that the euro could replace the U.S. dollar as the world's primary reserve currency.
Croatia and the euro said at the government session that "some occasional announcements when Croatia will introduce the euro shouldn't be taken seriously. We'll try to make it as soon as possible, but I distance myself from any dates and ask that you don't comment on it. When the country is ready, it will enter the euro area. The criteria are very clear." In November 2017, Prime Minister Andrej Plenkovic said that Croatia is aiming to join ERM-2 by 2020 and to introduce the Euro by 2025. Croatia and the euro Croatia's currency, the kuna, has used the euro (and prior to that one