# Country Value millions of USD[2] 1 Russia 8,400 2 Canada 5,700 3 United States 5,500 4 France 4,100 5 Australia 3,100 6 Ukraine 3,000 7 Argentina 2,400 8 Romania 1,230 9 Germany 1,160 10 Kazakhstan 965.4 11 Bulgaria 849.7 12 Hungary 482.1 13 Czech Republic 406.0 14 Poland 404.4 15 Lithuania 376.8