Since the beginning of modern civilization, an estimated 166,600 tons of gold has been mined, all of which would fit into a 20 meter cubed crate. If it was all melted, it would fit within the confines of an Olympic Swimming Pool. When the 166,600 tons are divided into four levels, the bottom level is jewelry (50.5% of all gold), the second level is a private investment (18.7%), the third level is world governments (17.4%), and the highest level is other uses for gold, such as industrial uses (13.4%).
The largest gold reserves represented in tons as of 2016 are:
USA:  8,133.5
Germany: 3,384.2
Italy : 2,451.8
France: 2,435.4
Russia: 1,149.80
The table does not list all gold holders: countries which have not reported their gold holdings to
IMF in the last six months are not included. Other countries are known to hold gold but
do not publicly report their earnings. Whenever the WGC knows of movements that are not
reported to the IMF or misprints, changes are made.
World Gold
Jewelry - 50.5%
Private investment- 18.7%
World governments -17.4%
Industry- 13.4%