Reserves - Country rankings:
The average for 2017 was 82.04 billion U.S. dollars.The highest value was in China: 3235.68 billion U.S. dollars and the lowest value was in Chad: 0.01 billion U.S. dollars. Below is a chart for all countries where data are available for: Reserves.
Foreign exchange reserves including gold, billion USD, 2017
(billion U.S. dollars, Source: The World Bank, TheGlobalEconomy.com)