# Country Quantity tonnes 1 Russia 33,025,971 2 United States 27,299,214 3 Canada 22,061,500 4 Australia 21,985,900 5 Ukraine 17,314,278 6 France 15,228,664 7 Argentina 13,099,133 8 Germany 7,890,971 9 Romania 5,759,094 10 Kazakhstan 4,256,341