Of all the gold in world how many swimming pools would it fill up?

According to the World Gold Council, the total amount of gold ever mined is about 200,000 metric tons. The volume of one Olympic-size swimming pool is about 2.5 million gallons, or 9,463.5 cubic meters. The density of gold is about 19.3 grams per cubic centimeter. So the volume of 200,000 metric tons of gold is about 10.3 million cubic meters. This means that the total amount of gold ever mined would fill up about 3 Olympic-size swimming pools.