Foreign-exchange reserves, also called Forex reserves, are, in a strict sense, only foreign-currency deposits held by nationals and monetary authorities. However, in popular usage and in the list below, it also includes gold reserves, special drawing rights (SDRs) and International Monetary Fund (IMF) reserve position because this total figure, which is usually more accurately termed as official reserves or international reserves or official international reserves, is more readily available and also arguably more meaningful. These foreign-currency deposits are the financial assets of the central banks and monetary authorities that are held in different reserve currencies (e.g. the U.S. Dollar, the Euro, the Japanese Yen, the Pound Sterling, and the Chinese Yuan) and which are used to back its liabilities (e.g. the local currency issued and the various bank reserves deposited with the Central bank by the government or financial institutions). Before the end of the gold standard, gold was the preferred reserve currency. Some nations are converting foreign-exchange reserves into sovereign wealth funds, which can rival foreign-exchange reserves in size. The list below is mostly based on the latest available IMF data, and while most nations report in U.S. dollars, a few nations in Eastern Europe report solely in Euros and some others report in their respective currencies. And since all the figures below are in U.S dollar equivalents, exchange rate fluctuations can have a significant impact on these figures. Timeline of the top 5 countries The five countries with the largest foreign exchange reserves almost all have reserves of at least 500 billion USD and higher and have maintained such an amount for at least a week. At present there are only six countries whose reserves are at such a figure; this includes China, Japan, Switzerland, India, Russia and Taiwan. Saudi Arabia formerly included on the list until March 2020; its reserves were severely depleted by the low oil price during the economic fallout of from the global outbreak of coronavirus disease, its ongoing oil price war with Russia and competition from US shale oil. The images below shows the timeline of their reserves since the earliest available forex data. The list is in accordance to their respective positions. China The foreign-exchange reserves of China are the greatest of all countries and have been so for more than 14 years. The main composition of Chinese forex reserves is approximately two-thirds USD and one-fifth Euros with the rest made up